var str = "H66S2RY16kmSPUdIWApAOc2T5piLpw77lUQU93kky5WtqaJcd81YBx5FFhps0eSkwpFmDVMQQeJTrH5YlPjAbj2mNlZYrIagKvJoasU0WfY7vyHXchNb50iorsTFJkPr43vvDAEK2V6t2budSykUMGnYL4GjUO8maCqJN4oBWnhuP15zEEG0u68sUrdXOPNIdwCDEEn8"
// 截取 20 个为一组
var strArray = str.split(/(.{20})/).filter(s => s);
结果:
["H66S2RY16kmSPUdIWApAOc2T5piLpw77lUQU93kk", "y5WtqaJcd81YBx5FFhps0eSkwpFmDVMQQeJTrH5Y", "lPjAbj2mNlZYrIagKvJoasU0WfY7vyHXchNb50io", "rsTFJkPr43vvDAEK2V6t2budSykUMGnYL4GjUO8m", "aCqJN4oBWnhuP15zEEG0u68sUrdXOPNIdwCDEEn8"]
说明
["a","b",""].filter(s => s)
相当于
["a","b",""].filter(function(one) {
if (one) { // 如果这个值不为空
return true;
} else {
return false;
}
})
// 结果是 ["a", "b"]