lovecoding
/
VIP32


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <ul>
        <li>内容一</li>
        <li>内容二</li>
        <li>内容三</li>
        <li>内容四</li>
    </ul>
    <script>
        /**
         * 类数组：不能直接使用数组方法 
         * 1.JavaScript中常见的类数组：arguments 
         * 2.由querySelectorAll,getElementsByClassName,getElementsByTagName
        */
        var arr = [1,2,3,4,5,6];
        // console.log(arr);
        // function fn1() {
        //     console.log(arguments);
        // }
        // fn1(arr);
        // document.getElementsByTagName
        // document.getElementsByClassName
        // console.log(document.querySelectorAll("ul li"));
        var news = document.querySelectorAll("ul li");
        news.push("000");
        console.log(news,'news');
        // 类数组转成正常数组 
        let list = [...news];
        list.push("333");
        console.log(list,'list');

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