JavaScript for...of 循环

迭代（循环）数组的值：

let text = "";
const cars = ['BMW', 'Volvo', 'Mini'];
for (let x of cars) {
text += x + " ";
}

迭代（循环）字符串的值：

let text = "JavaScript";
for (let x of text) {
text += x + " ";
}

描述

这个for...of语句组合迭代（循环）任何可迭代的值。

循环内的代码块针对每个值执行一次。

for (x of iterable) {
code block to be executed
}

Parameter	Description
x	Required. For every iteration the value of the next property is assigned to x.
iterable	Required. Anything that has iterable properties.

for..of是 ECMAScript6 (ES6) 功能。

所有现代浏览器都支持 ES6 (JavaScript 2015)：


Chrome	Edge	Firefox	Safari	Opera
Yes	Yes	Yes	Yes	Yes

for..ofInternet Explorer 11（或更早版本）不支持。