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This time I bring to you, what are the precautions, the following is a practical case, let's take a look. z
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>javascript里面的数组，json对象，动态添加，修改，删除示例</title>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript">
var a = JSON.parse("{\"title\":\"\",\"data\":[]}");
var b = JSON.parse("{\"id\":\"2\"}");
var c = JSON.parse("{\"id\":\"3\"}");
var d = JSON.parse("{\"id\":\"4\"}");
var e = JSON.parse("{\"id\":\"5\"}");
var f = JSON.parse("{\"id\":\"6\"}");
function myObjectPush() {
debugger;
/* javascript里面的数组，json对象，动态添加，修改，
删除示例 只要适合Javascript的方法都是可以用在JSON对象的数组中的！
所以还有另外的方法splice( )进行crud操作！
*/
//增加属性
$(a).attr("id", "1");
//增加子对象
a.data.push(b);//数组最后加一条记录
a.data.push(c);
a.data.push(d);
a.data.unshift(d);//数组最前面加一条记录
//修改子对象及属性
a.title = "这是json名字";
//删除子对象
//json的删除有很多种，直接用过 delete json对象方式:
delete a.data[1];
a.data.pop(); //删除最后一项
a.data.shift(); //删除第一项
a.data.splice(0, 1); //删除指定子对象，参数：开始位置,删除个数
//替换不删除
a.data.splice(1, 0, e, f);//开始位置,删除个数,插入对象
//替换并删除 a.data.splice(0, 1, e, f);//开始位置,删除个数,插入对象
console.log(a);
}
</script>
</head>
<body onload="myObjectPush()">
</body>
</html>
Run result:
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
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