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JavaScript中的splice()方法使用详解

时间:2021-07-02 08:55:53 | 栏目:JavaScript代码 | 点击:

 JavaScript数组的splice()方法改变数组的内容,增加了新的元素,同时消除旧元素。
语法

array.splice(index, howMany, [element1][, ..., elementN]);

下面是参数的详细信息:

返回值:

返回基于传递的参数提取数组。
例子:

<html>
<head>
<title>JavaScript Array splice Method</title>
</head>
<body>
<script type="text/javascript">
var arr = ["orange", "mango", "banana", "sugar", "tea"];

var removed = arr.splice(2, 0, "water");
document.write("After adding 1: " + arr );
document.write("<br />removed is: " + removed);

removed = arr.splice(3, 1);
document.write("<br />After adding 1: " + arr );
document.write("<br />removed is: " + removed);

</script>
</body>
</html>

这将产生以下结果:

After adding 1: orange,mango,water,banana,sugar,tea
removed is: 
After adding 1: orange,mango,water,sugar,tea
removed is: banana 

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