<!DOCTYPE HTML>
<html lang = 'en'>
<head>
<meta charset = 'UTF-8'/>
<title>Document1</title>
<style>
</style>
</head>
<body>
<script>
//let [a,b,c] = [1,2,3];
//console.log(a,b,c);
//这种赋值方式括号中变量与值一一对应
//let [a=3, b] = [1];
//console.log(a,b);
//这种赋值方式首先先给a给了一个默认值3，后将1赋给a，b没值输出undefined
//let c;
//let [a = 3] = [c];
//console.log(a);
//这种赋值方式当后面的值属于未知值如c，a的取值默认值
//let {a,b} = {a : 111, b : 222};
//console.log(a,b);
//这种赋值方式括号中变量与值一一对应
//let {a:b} = {a : 111};
//console.log(b);
//这种赋值方式将111给了b，并且a是is not defined
let {
a,b = 5} = {
a : 1};
console.log(a,b);
//这种赋值方式a为1b为5
</script>
</body>
</html>
ES6中let的各种赋值方式结合代码详解
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转载自blog.csdn.net/weixin_48727085/article/details/108272541
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