NodeList.keys()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
NodeList.keys()
方法返回 iterator
,此方法允许遍历这个对象中包含的所有的键,即使这个键是 unsigned integer(无符号整数)
.
语法
js
keys()
返回值
返回 iterator
.
示例
js
var node = document.createElement("div");
var kid1 = document.createElement("p");
var kid2 = document.createTextNode("hey");
var kid3 = document.createElement("span");
node.appendChild(kid1);
node.appendChild(kid2);
node.appendChild(kid3);
var list = node.childNodes;
// Using for..of
for (var key of list.keys()) {
console.log(key);
}
结果是:
0 1 2
浏览器兼容性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
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keys |
Legend
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- Full support
- Full support
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