1. 删除元素
html
span{
color: white;
padding: 8px;
margin: 5px;
float: left;
}
.green {
background-color: green;
}
.blue {
background-color: blue;
}
<span class="green">green</span>
<span class="blue">blue</span>
<span class="green">333</span>
<span class="blue">444</span>
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- 使用 remove() -> 删除元素及其子元素,标签和内容一起删除
指定元素.remove()
javascript
$(".green").remove()
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- empty() -> 清空元素内容, 保留标签
javascript
$(".blue").empty()
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2. 遍历元素
html
span{
color: white;
padding: 8px;
margin: 5px;
float: left;
}
.green {
background-color: green;
}
.blue {
background-color: blue;
}
<h3>遍历元素</h3>
<span class="green">green</span>
<span class="green">blue</span>
<span class="green">333</span>
<span class="green">444</span>
each():
$(selector).each(function(index,element))
// 参数function为遍历时的回调函数
// index为遍历元素的序列号,从0开始
// element是当前的元素,此时是dom元素
javascript
// 获取指定元素并遍历
$(".green").each(function(index, element) {
console.log(index)
console.log(element)
})
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