arguments.@@iterator
@@iterator 属性的初始值是和Array.prototype.values属性的初始值相同的对象。
语法
arguments[Symbol.iterator]()示例
使用for...of循环的迭代
function f() {
// your browser must support for..of loop
// and let-scoped variables in for loops
for (let letter of arguments) {
console.log(letter);
}
}
f('w', 'y', 'k', 'o', 'p');规范
Specification | Status | Comment |
|---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262)The definition of ' CreateUnmappedArgumentsObject' in that specification. | Standard | Initial definition. |
ECMAScript 2015 (6th Edition, ECMA-262)The definition of ' CreateMappedArgumentsObject' in that specification. | Standard | Initial definition. |
ECMAScript 2017 Draft (ECMA-262)The definition of 'CreateUnmappedArgumentsObject' in that specification. | Draft | |
ECMAScript 2017 Draft (ECMA-262)The definition of 'CreateMappedArgumentsObject' in that specification. | Draft | |
浏览器兼容性
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
Basic support | 52 | 46 (46) | ? | ? | 9 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
Basic support | ? | ? | 46.0 (46) | ? | ? | ? |
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