JavaScript数组方法之length-长度属性
<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>三十课 - JavaScript数组方法之length-长度属性</title> <script src="http://res.30ke.cn/res/js/console.js"></script> </head> <body> <div id="main"></div> <script> var array1 = [ 'a', 'b', 'c' ]; console.log(array1.length); // 输出 3 array1.length = 2; console.log(array1); // 输出 [ "a", "b" ] </script> </body> </html>
运行结果
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