一、vscode中小程序使用less
Step 1：
Ctrl+Shift+X 打开扩展 - 搜索 easy Less 并安装
Step 2：
文件 - 首选项 -设置 - setting.json - 新增如下配置
"less.compile": {
// "compress": true, // 是否删除多余空白字符
// "sourceMap": true, // 是否创建文件目录树，true的话会自动生成一个 .css.map 文件
"outExt": ".wxss" // 输出文件的后缀,默认为.css
},
Step 3：
在你的wxml同级目录下新建一个 文件名.less 书写less语法的css并保存，同级目录下就会自动生成一个 文件名.wxss的文件
二、vscode中小程序使用 Css 生成树
安装插件CSS Treee
选中HTML - ctrl+shift+p - 选择 Generate CSS tree - 拷贝代码至less
三、小程序搭建项目目录
image.png
四、小程序使用阿里巴巴字体图标库
将代码存至 styles - iconfont.wxss 中
image.png
在 app.wxss中全局引入： 即可在任何页面使用<view class="iconfont xxx"></view>
@import './styles/iconfont.wxss';
五、小程序主题颜色 通过变量来实现
less中存在变量这个知识
原生的css和wxss也支持变量
在app.wxss中定义
page{
/*定义主题颜色*/
--themeColor: #eb4450;
/*定义统一的字体大小 假设设计稿 大小是375px 则小程序中1px=2rpx 14px=28rpx */
font-size: 28rpx;
}
在index.wxss中使用
view {
color: var(--themeColor);
}
六、设置带有时间的缓存
wx.setStorageSync( "access-token",{time: Date.now(), data:res.data.access_token});
wx.setStorageSync(key,{time: Date.now(), data, value})
image.png
10s过期 过期了就重新请求
const cates = wx.getStorageSync('cates');
if (!cates){
this.getCates();
}else{
if (Date.now() - cates.time > 1000 *10) {
this.getCates();
}else{
console.log('可以使用旧数据');
}
}
image.png
七、小程序使用ES7 async
image.png
下载'facebook/gererator/packages/regenerator-runtime'这个路径下的runtime.js，放到自己小程序项目下的utils或者lib文件夹下
https://github.com/facebook/regenerator/blob/master/packages/regenerator-runtime/runtime.js
/**
* Copyright (c) 2014-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
var runtime = (function (exports) {
"use strict";
var Op = Object.prototype;
var hasOwn = Op.hasOwnProperty;
var undefined; // More compressible than void 0.
var $Symbol = typeof Symbol === "function" ? Symbol : {};
var iteratorSymbol = $Symbol.iterator || "@@iterator";
var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
function wrap(innerFn, outerFn, self, tryLocsList) {
// If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
var generator = Object.create(protoGenerator.prototype);
var context = new Context(tryLocsList || []);
// The ._invoke method unifies the implementations of the .next,
// .throw, and .return methods.
generator._invoke = makeInvokeMethod(innerFn, self, context);
return generator;
}
exports.wrap = wrap;
// Try/catch helper to minimize deoptimizations. Returns a completion
// record like context.tryEntries[i].completion. This interface could
// have been (and was previously) designed to take a closure to be
// invoked without arguments, but in all the cases we care about we
// already have an existing method we want to call, so there's no need
// to create a new function object. We can even get away with assuming
// the method takes exactly one argument, since that happens to be true
// in every case, so we don't have to touch the arguments object. The
// only additional allocation required is the completion record, which
// has a stable shape and so hopefully should be cheap to allocate.
function tryCatch(fn, obj, arg) {
try {
return { type: "normal", arg: fn.call(obj, arg) };
} catch (err) {
return { type: "throw", arg: err };
}
}
var GenStateSuspendedStart = "suspendedStart";
var GenStateSuspendedYield = "suspendedYield";
var GenStateExecuting = "executing";
var GenStateCompleted = "completed";
// Returning this object from the innerFn has the same effect as
// breaking out of the dispatch switch statement.
var ContinueSentinel = {};
// Dummy constructor functions that we use as the .constructor and
// .constructor.prototype properties for functions that return Generator
// objects. For full spec compliance, you may wish to configure your
// minifier not to mangle the names of these two functions.
function Generator() {}
function GeneratorFunction() {}
function GeneratorFunctionPrototype() {}
// This is a polyfill for %IteratorPrototype% for environments that
// don't natively support it.
var IteratorPrototype = {};
IteratorPrototype[iteratorSymbol] = function () {
return this;
};
var getProto = Object.getPrototypeOf;
var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
if (NativeIteratorPrototype &&
NativeIteratorPrototype !== Op &&
hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
// This environment has a native %IteratorPrototype%; use it instead
// of the polyfill.
IteratorPrototype = NativeIteratorPrototype;
}
var Gp = GeneratorFunctionPrototype.prototype =
Generator.prototype = Object.create(IteratorPrototype);
GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
GeneratorFunctionPrototype.constructor = GeneratorFunction;
GeneratorFunctionPrototype[toStringTagSymbol] =
GeneratorFunction.displayName = "GeneratorFunction";
// Helper for defining the .next, .throw, and .return methods of the
// Iterator interface in terms of a single ._invoke method.
function defineIteratorMethods(prototype) {
["next", "throw", "return"].forEach(function(method) {
prototype[method] = function(arg) {
return this._invoke(method, arg);
};
});
}
exports.isGeneratorFunction = function(genFun) {
var ctor = typeof genFun === "function" && genFun.constructor;
return ctor
? ctor === GeneratorFunction ||
// For the native GeneratorFunction constructor, the best we can
// do is to check its .name property.
(ctor.displayName || ctor.name) === "GeneratorFunction"
: false;
};
exports.mark = function(genFun) {
if (Object.setPrototypeOf) {
Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
} else {
genFun.__proto__ = GeneratorFunctionPrototype;
if (!(toStringTagSymbol in genFun)) {
genFun[toStringTagSymbol] = "GeneratorFunction";
}
}
genFun.prototype = Object.create(Gp);
return genFun;
};
// Within the body of any async function, `await x` is transformed to
// `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
// `hasOwn.call(value, "__await")` to determine if the yielded value is
// meant to be awaited.
exports.awrap = function(arg) {
return { __await: arg };
};
function AsyncIterator(generator, PromiseImpl) {
function invoke(method, arg, resolve, reject) {
var record = tryCatch(generator[method], generator, arg);
if (record.type === "throw") {
reject(record.arg);
} else {
var result = record.arg;
var value = result.value;
if (value &&
typeof value === "object" &&
hasOwn.call(value, "__await")) {
return PromiseImpl.resolve(value.__await).then(function(value) {
invoke("next", value, resolve, reject);
}, function(err) {
invoke("throw", err, resolve, reject);
});
}
return PromiseImpl.resolve(value).then(function(unwrapped) {
// When a yielded Promise is resolved, its final value becomes
// the .value of the Promise<{value,done}> result for the
// current iteration.
result.value = unwrapped;
resolve(result);
}, function(error) {
// If a rejected Promise was yielded, throw the rejection back
// into the async generator function so it can be handled there.
return invoke("throw", error, resolve, reject);
});
}
}
var previousPromise;
function enqueue(method, arg) {
function callInvokeWithMethodAndArg() {
return new PromiseImpl(function(resolve, reject) {
invoke(method, arg, resolve, reject);
});
}
return previousPromise =
// If enqueue has been called before, then we want to wait until
// all previous Promises have been resolved before calling invoke,
// so that results are always delivered in the correct order. If
// enqueue has not been called before, then it is important to
// call invoke immediately, without waiting on a callback to fire,
// so that the async generator function has the opportunity to do
// any necessary setup in a predictable way. This predictability
// is why the Promise constructor synchronously invokes its
// executor callback, and why async functions synchronously
// execute code before the first await. Since we implement simple
// async functions in terms of async generators, it is especially
// important to get this right, even though it requires care.
previousPromise ? previousPromise.then(
callInvokeWithMethodAndArg,
// Avoid propagating failures to Promises returned by later
// invocations of the iterator.
callInvokeWithMethodAndArg
) : callInvokeWithMethodAndArg();
}
// Define the unified helper method that is used to implement .next,
// .throw, and .return (see defineIteratorMethods).
this._invoke = enqueue;
}
defineIteratorMethods(AsyncIterator.prototype);
AsyncIterator.prototype[asyncIteratorSymbol] = function () {
return this;
};
exports.AsyncIterator = AsyncIterator;
// Note that simple async functions are implemented on top of
// AsyncIterator objects; they just return a Promise for the value of
// the final result produced by the iterator.
exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {
if (PromiseImpl === void 0) PromiseImpl = Promise;
var iter = new AsyncIterator(
wrap(innerFn, outerFn, self, tryLocsList),
PromiseImpl
);
return exports.isGeneratorFunction(outerFn)
? iter // If outerFn is a generator, return the full iterator.
: iter.next().then(function(result) {
return result.done ? result.value : iter.next();
});
};
function makeInvokeMethod(innerFn, self, context) {
var state = GenStateSuspendedStart;
return function invoke(method, arg) {
if (state === GenStateExecuting) {
throw new Error("Generator is already running");
}
if (state === GenStateCompleted) {
if (method === "throw") {
throw arg;
}
// Be forgiving, per 25.3.3.3.3 of the spec:
// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
return doneResult();
}
context.method = method;
context.arg = arg;
while (true) {
var delegate = context.delegate;
if (delegate) {
var delegateResult = maybeInvokeDelegate(delegate, context);
if (delegateResult) {
if (delegateResult === ContinueSentinel) continue;
return delegateResult;
}
}
if (context.method === "next") {
// Setting context._sent for legacy support of Babel's
// function.sent implementation.
context.sent = context._sent = context.arg;
} else if (context.method === "throw") {
if (state === GenStateSuspendedStart) {
state = GenStateCompleted;
throw context.arg;
}
context.dispatchException(context.arg);
} else if (context.method === "return") {
context.abrupt("return", context.arg);
}
state = GenStateExecuting;
var record = tryCatch(innerFn, self, context);
if (record.type === "normal") {
// If an exception is thrown from innerFn, we leave state ===
// GenStateExecuting and loop back for another invocation.
state = context.done
? GenStateCompleted
: GenStateSuspendedYield;
if (record.arg === ContinueSentinel) {
continue;
}
return {
value: record.arg,
done: context.done
};
} else if (record.type === "throw") {
state = GenStateCompleted;
// Dispatch the exception by looping back around to the
// context.dispatchException(context.arg) call above.
context.method = "throw";
context.arg = record.arg;
}
}
};
}
// Call delegate.iterator[context.method](context.arg) and handle the
// result, either by returning a { value, done } result from the
// delegate iterator, or by modifying context.method and context.arg,
// setting context.delegate to null, and returning the ContinueSentinel.
function maybeInvokeDelegate(delegate, context) {
var method = delegate.iterator[context.method];
if (method === undefined) {
// A .throw or .return when the delegate iterator has no .throw
// method always terminates the yield* loop.
context.delegate = null;
if (context.method === "throw") {
// Note: ["return"] must be used for ES3 parsing compatibility.
if (delegate.iterator["return"]) {
// If the delegate iterator has a return method, give it a
// chance to clean up.
context.method = "return";
context.arg = undefined;
maybeInvokeDelegate(delegate, context);
if (context.method === "throw") {
// If maybeInvokeDelegate(context) changed context.method from
// "return" to "throw", let that override the TypeError below.
return ContinueSentinel;
}
}
context.method = "throw";
context.arg = new TypeError(
"The iterator does not provide a 'throw' method");
}
return ContinueSentinel;
}
var record = tryCatch(method, delegate.iterator, context.arg);
if (record.type === "throw") {
context.method = "throw";
context.arg = record.arg;
context.delegate = null;
return ContinueSentinel;
}
var info = record.arg;
if (! info) {
context.method = "throw";
context.arg = new TypeError("iterator result is not an object");
context.delegate = null;
return ContinueSentinel;
}
if (info.done) {
// Assign the result of the finished delegate to the temporary
// variable specified by delegate.resultName (see delegateYield).
context[delegate.resultName] = info.value;
// Resume execution at the desired location (see delegateYield).
context.next = delegate.nextLoc;
// If context.method was "throw" but the delegate handled the
// exception, let the outer generator proceed normally. If
// context.method was "next", forget context.arg since it has been
// "consumed" by the delegate iterator. If context.method was
// "return", allow the original .return call to continue in the
// outer generator.
if (context.method !== "return") {
context.method = "next";
context.arg = undefined;
}
} else {
// Re-yield the result returned by the delegate method.
return info;
}
// The delegate iterator is finished, so forget it and continue with
// the outer generator.
context.delegate = null;
return ContinueSentinel;
}
// Define Generator.prototype.{next,throw,return} in terms of the
// unified ._invoke helper method.
defineIteratorMethods(Gp);
Gp[toStringTagSymbol] = "Generator";
// A Generator should always return itself as the iterator object when the
// @@iterator function is called on it. Some browsers' implementations of the
// iterator prototype chain incorrectly implement this, causing the Generator
// object to not be returned from this call. This ensures that doesn't happen.
// See https://github.com/facebook/regenerator/issues/274 for more details.
Gp[iteratorSymbol] = function() {
return this;
};
Gp.toString = function() {
return "[object Generator]";
};
function pushTryEntry(locs) {
var entry = { tryLoc: locs[0] };
if (1 in locs) {
entry.catchLoc = locs[1];
}
if (2 in locs) {
entry.finallyLoc = locs[2];
entry.afterLoc = locs[3];
}
this.tryEntries.push(entry);
}
function resetTryEntry(entry) {
var record = entry.completion || {};
record.type = "normal";
delete record.arg;
entry.completion = record;
}
function Context(tryLocsList) {
// The root entry object (effectively a try statement without a catch
// or a finally block) gives us a place to store values thrown from
// locations where there is no enclosing try statement.
this.tryEntries = [{ tryLoc: "root" }];
tryLocsList.forEach(pushTryEntry, this);
this.reset(true);
}
exports.keys = function(object) {
var keys = [];
for (var key in object) {
keys.push(key);
}
keys.reverse();
// Rather than returning an object with a next method, we keep
// things simple and return the next function itself.
return function next() {
while (keys.length) {
var key = keys.pop();
if (key in object) {
next.value = key;
next.done = false;
return next;
}
}
// To avoid creating an additional object, we just hang the .value
// and .done properties off the next function object itself. This
// also ensures that the minifier will not anonymize the function.
next.done = true;
return next;
};
};
function values(iterable) {
if (iterable) {
var iteratorMethod = iterable[iteratorSymbol];
if (iteratorMethod) {
return iteratorMethod.call(iterable);
}
if (typeof iterable.next === "function") {
return iterable;
}
if (!isNaN(iterable.length)) {
var i = -1, next = function next() {
while (++i < iterable.length) {
if (hasOwn.call(iterable, i)) {
next.value = iterable[i];
next.done = false;
return next;
}
}
next.value = undefined;
next.done = true;
return next;
};
return next.next = next;
}
}
// Return an iterator with no values.
return { next: doneResult };
}
exports.values = values;
function doneResult() {
return { value: undefined, done: true };
}
Context.prototype = {
constructor: Context,
reset: function(skipTempReset) {
this.prev = 0;
this.next = 0;
// Resetting context._sent for legacy support of Babel's
// function.sent implementation.
this.sent = this._sent = undefined;
this.done = false;
this.delegate = null;
this.method = "next";
this.arg = undefined;
this.tryEntries.forEach(resetTryEntry);
if (!skipTempReset) {
for (var name in this) {
// Not sure about the optimal order of these conditions:
if (name.charAt(0) === "t" &&
hasOwn.call(this, name) &&
!isNaN(+name.slice(1))) {
this[name] = undefined;
}
}
}
},
stop: function() {
this.done = true;
var rootEntry = this.tryEntries[0];
var rootRecord = rootEntry.completion;
if (rootRecord.type === "throw") {
throw rootRecord.arg;
}
return this.rval;
},
dispatchException: function(exception) {
if (this.done) {
throw exception;
}
var context = this;
function handle(loc, caught) {
record.type = "throw";
record.arg = exception;
context.next = loc;
if (caught) {
// If the dispatched exception was caught by a catch block,
// then let that catch block handle the exception normally.
context.method = "next";
context.arg = undefined;
}
return !! caught;
}
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
var record = entry.completion;
if (entry.tryLoc === "root") {
// Exception thrown outside of any try block that could handle
// it, so set the completion value of the entire function to
// throw the exception.
return handle("end");
}
if (entry.tryLoc <= this.prev) {
var hasCatch = hasOwn.call(entry, "catchLoc");
var hasFinally = hasOwn.call(entry, "finallyLoc");
if (hasCatch && hasFinally) {
if (this.prev < entry.catchLoc) {
return handle(entry.catchLoc, true);
} else if (this.prev < entry.finallyLoc) {
return handle(entry.finallyLoc);
}
} else if (hasCatch) {
if (this.prev < entry.catchLoc) {
return handle(entry.catchLoc, true);
}
} else if (hasFinally) {
if (this.prev < entry.finallyLoc) {
return handle(entry.finallyLoc);
}
} else {
throw new Error("try statement without catch or finally");
}
}
}
},
abrupt: function(type, arg) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
if (entry.tryLoc <= this.prev &&
hasOwn.call(entry, "finallyLoc") &&
this.prev < entry.finallyLoc) {
var finallyEntry = entry;
break;
}
}
if (finallyEntry &&
(type === "break" ||
type === "continue") &&
finallyEntry.tryLoc <= arg &&
arg <= finallyEntry.finallyLoc) {
// Ignore the finally entry if control is not jumping to a
// location outside the try/catch block.
finallyEntry = null;
}
var record = finallyEntry ? finallyEntry.completion : {};
record.type = type;
record.arg = arg;
if (finallyEntry) {
this.method = "next";
this.next = finallyEntry.finallyLoc;
return ContinueSentinel;
}
return this.complete(record);
},
complete: function(record, afterLoc) {
if (record.type === "throw") {
throw record.arg;
}
if (record.type === "break" ||
record.type === "continue") {
this.next = record.arg;
} else if (record.type === "return") {
this.rval = this.arg = record.arg;
this.method = "return";
this.next = "end";
} else if (record.type === "normal" && afterLoc) {
this.next = afterLoc;
}
return ContinueSentinel;
},
finish: function(finallyLoc) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
if (entry.finallyLoc === finallyLoc) {
this.complete(entry.completion, entry.afterLoc);
resetTryEntry(entry);
return ContinueSentinel;
}
}
},
"catch": function(tryLoc) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
if (entry.tryLoc === tryLoc) {
var record = entry.completion;
if (record.type === "throw") {
var thrown = record.arg;
resetTryEntry(entry);
}
return thrown;
}
}
// The context.catch method must only be called with a location
// argument that corresponds to a known catch block.
throw new Error("illegal catch attempt");
},
delegateYield: function(iterable, resultName, nextLoc) {
this.delegate = {
iterator: values(iterable),
resultName: resultName,
nextLoc: nextLoc
};
if (this.method === "next") {
// Deliberately forget the last sent value so that we don't
// accidentally pass it on to the delegate.
this.arg = undefined;
}
return ContinueSentinel;
}
};
// Regardless of whether this script is executing as a CommonJS module
// or not, return the runtime object so that we can declare the variable
// regeneratorRuntime in the outer scope, which allows this module to be
// injected easily by `bin/regenerator --include-runtime script.js`.
return exports;
}(
// If this script is executing as a CommonJS module, use module.exports
// as the regeneratorRuntime namespace. Otherwise create a new empty
// object. Either way, the resulting object will be used to initialize
// the regeneratorRuntime variable at the top of this file.
typeof module === "object" ? module.exports : {}
));
try {
regeneratorRuntime = runtime;
} catch (accidentalStrictMode) {
// This module should not be running in strict mode, so the above
// assignment should always work unless something is misconfigured. Just
// in case runtime.js accidentally runs in strict mode, we can escape
// strict mode using a global Function call. This could conceivably fail
// if a Content Security Policy forbids using Function, but in that case
// the proper solution is to fix the accidental strict mode problem. If
// you've misconfigured your bundler to force strict mode and applied a
// CSP to forbid Function, and you're not willing to fix either of those
// problems, please detail your unique predicament in a GitHub issue.
Function("r", "regeneratorRuntime = r")(runtime);
}
八、添加全局正在加载请求
image.png
image.png
九、navigator标签传参
image.png
十、data中只存放标签wxml中要使用的数据，否则存放过多会影响小程序的性能
image.png
image.png
十一、点击轮播图，预览大图
image.png
十二、授权获取 收货地址
image.png
法一、
handleChooseAddress(){
// 1、获取 权限状态
wx.getSetting({
success: res1=> {
// 2、获取权限状态
const scopeAddress = res1.authSetting['scope.address']
if (scopeAddress == true || scopeAddress == undefined){
wx.chooseAddress({
success: res2 => {
console.log(res2)
}
})
}else{
// 3、用户 以前拒绝过授权权限 先诱导用户打开授权页面
wx.openSetting({
success: res3 => {
wx.chooseAddress({
success: res2 => {
console.log(res2)
}
})
}
})
}
}
})
}
法二、使用异步
utils - asyncWx.js
export const getSetting = () => {
return new Promise((resolve, reject) => {
wx.getSetting({
success(res) {
resolve(res);
},
fail(error){
reject(error);
}
});
})
}
export const chooseAddress = () => {
return new Promise((resolve, reject) => {
wx.chooseAddress({
success(res) {
resolve(res);
},
fail(error){
reject(error);
}
});
})
}
export const openSetting = () => {
return new Promise((resolve, reject) => {
wx.openSetting({
success(res) {
resolve(res);
},
fail(error){
reject(error);
}
});
})
}
index.js
// 引入使用async文件
import regeneratorRuntime from '../../lib/runtime/runtime'
import {getSetting,chooseAddress,openSetting} from '../../utils/asyncWx.js';
Page({
data: {
},
onLoad: function () {
},
async handleChooseAddress(){
try{
// 1、获取 权限状态
const res1 = await getSetting();
const scopeAddress = res1.authSetting['scope.address'];
//2、判断权限状态
if (scopeAddress == false){
// 3、诱导用户打开授权页面
await openSetting();
}
// 4、调用获取收货地址的api
const address = await chooseAddress();
// 5、将地址存入缓存
wx.setStorageSync('address', address)
}catch(error){
console.log(error)
}
}
})
image.png
十三、购物车静态页面
<!-- 购物车内容 -->
<view class="cart_content">
<view class="cart_title">购物车</view>
<view class="cart_main">
<view class="cart_item">
<!-- 复选框 -->
<view class="cart_chk_wrap">
<checkbox-group bindchange="">
<checkbox></checkbox>
</checkbox-group>
</view>
<!-- 商品图片 -->
<navigator class="cart_img_wrap">
<image mode="widthFix" src="https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1592977852744&di=0bf69429957c11855803514b2c2dde0e&imgtype=0&src=http%3A%2F%2Fa3.att.hudong.com%2F14%2F75%2F01300000164186121366756803686.jpg"></image>
</navigator>
<!-- 商品信息 -->
<view class="cart_info_wrap">
<view class="goods_name">重磅！“孟晚舟引渡案”日程确定：8月17日恢复引渡听证会，法院希望在2021年5月前结案</view>
<view class="goods_price_wrap">
<view class="goods_price">￥9999</view>
<view class="cart_num_tool">
<view class="num_edit">-</view>
<view class="goods_num">10</view>
<view class="num_edit">+</view>
</view>
</view>
</view>
</view>
</view>
</view>
.cart_content {
.cart_title {
padding: 20rpx;
font-style: 36rpx;
color: var(--themeColor);
border-top: 1rpx solid currentColor;
border-bottom: 1rpx solid currentColor;
}
.cart_main {
.cart_item {
display: flex;
padding: 10rpx;
border-bottom: 1rpx solid #ccc;
.cart_chk_wrap {
display: flex;
justify-content: center;
align-items: center;
checkbox-group {
checkbox {
}
}
}
.cart_img_wrap {
flex:2;
display: flex;
justify-content: center;
align-items: center;
image {
width: 80%;
}
}
.cart_info_wrap {
flex: 4;
display: flex;
flex-direction: column;
justify-content: space-around;
padding: 10rpx;
.goods_name {
/*显示2行，超出省略号表示*/
display: -webkit-box;
overflow: hidden;
-webkit-box-orient:vertical;
-webkit-line-clamp: 2;
color: #666;
margin: 20rpx;
}
.goods_price_wrap {
display: flex;
justify-content: space-between;
.goods_price {
color: var(--themeColor);
font-style: 34rpx;
}
.cart_num_tool {
display: flex;
.num_edit {
width: 50rpx;
height: 50rpx;
display: flex;
justify-content: center;
align-items: center;
border: 1px solid #ccc;
}
.goods_num {
width: 50rpx;
height: 50rpx;
display: flex;
justify-content: center;
align-items: center;
}
}
}
}
}
}
}
image.png
<!-- 底部工具栏 -->
<view class="footer_tool">
<!-- 全选 -->
<view class="all_chk_wrap">
<checkbox-group bindchange="">
<checkbox>全选</checkbox>
</checkbox-group>
</view>
<!-- 总价格 -->
<view class="total_price_wrap">
<view class="total_price">
合计：<text class="total_price_text">￥666</text>
</view>
<view>包含运费</view>
</view>
<!-- 结算 -->
<view class="order_pay_wrap">结算2</view>
</view>
.footer_tool {
position: fixed;
bottom: 90rpx;
left: 0;
width: 100%;
height: 90rpx;
background-color: #fff;
display: flex;
border-top: 1rpx solid #ccc;
.all_chk_wrap {
flex: 2;
display: flex;
justify-content: center;
align-items: center;
}
.total_price_wrap {
flex: 5;
text-align: right;
padding-right: 15rpx;
.total_price {
.total_price_text {
color: var(--themeColor);
font-size: 34rpx;
font-weight: 600;
}
}
}
.order_pay_wrap {
flex: 3;
background-color: var(--themeColor);
color: #fff;
font-size: 32rpx;
display: flex;
justify-content: center;
align-items: center;
}
}
image.png
十四、加入购物车
image.png
let index = cart.findIndex(v=>v.goods_id == this.GoodsInfo.id)
GoodsInfo存放商品详情
在下面位置新增代码checked = true 用来购物车中选中状态
this.GoodsInfo.num =1;
this.GoodsInfo.checked = true;
image.png
image.png
十五、购物车全选
image.png
Page({
data: {
cart: [],
allChecked: false
},
onShow(){
const cart = wx.getStorageSync('cart') || [];
// 1、计算全选
// every 数组方法 遍历数组 会接收一个回调函数 每个回调函数都返回true 那么every方法的返回值为true
// 只要有一个回调函数返回了false 那么不在循环执行，直接返回false
// 空数组 调用every方法 返回值就是true
const allChecked = cart.length ? cart.every( v=> v.checked) : false;
// 2、 给data赋值
this.setData({
cart,
allChecked
})
}
})
<checkbox-group bindchange="">
<checkbox checked="{{allChecked}}">全选</checkbox>
</checkbox-group>
十六、购物车总价与总数量
image.png
Page({
data: {
cart: [],
allChecked: false，
totalPrice: 0,
totalNum: 0
},
onShow(){
const cart = wx.getStorageSync('cart') || [];
// 1、计算全选
// every 数组方法 遍历数组 会接收一个回调函数 每个回调函数都返回true 那么every方法的返回值为true
// 只要有一个回调函数返回了false 那么不在循环执行，直接返回false
// 空数组 调用every方法 返回值就是true
// const allChecked = cart.length ? cart.every( v=> v.checked) : false;
// 1、计算总价和总数量
let allChecked = true;
let totalPrice = 0;
let totalNum = 0;
cart.forEach(v => {
if (v.checked) {
totalPrice +=v.num * v.goods_price;
totalNum +=v.num;
}else{
allChecked = false;
}
})
// 判断数组是否为空
allChecked = cart.length !=0 ? allChecked : false;
// 2、 给data赋值
this.setData({
cart,
allChecked,
totalPrice ,
totalNum
})
}
})
image.png
image.png
封装这部分代码
image.png
全选 反选
image.png
image.png
商品数量的编辑
image.png
image.png
image.png
image.png
image.png
微信支付
image.png
调用订单接口 获取订单编号
调用预支付接口（参数：订单编号）
获取如下参数
调用微信支付
wx.requestPayment({
timeStamp: '',
nonceStr: '',
package: '',
signType: '',
paySign: '',
success: res => {}
})
