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这是一个实验中的功能
此功能某些浏览器尚在开发中，请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订，所以在未来版本的浏览器中该功能的语法和行为可能随之改变。
URLSearchParams.keys()返回一个iterator，遍历器允许遍历对象中包含的所有键。这些键都是USVString对象。
注意: 该方法在 Web Workers中也可使用
语法
searchParams.keys();
返回值
返回一个iterator.
例子
// 建立一个测试用URLSearchParams对象
var searchParams = new URLSearchParams("key1=value1&key2=value2");
// 输出键值对
for(var key of searchParams.keys()) {
console.log(key);
}
结果如下：
key1 key2
浏览器兼容性
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
keys | Chrome Full support 49 | Edge Full support 17 | Firefox Full support 44 | IE No support No | Opera Full support 36 | Safari Full support Yes | WebView Android Full support 49 | Chrome Android Full support 49 | Firefox Android Full support 44 | Opera Android Full support 36 | Safari iOS Full support Yes | Samsung Internet Android Full support 5.0 |
Legend
- Full support
- Full support
- No support
- No support