JavaScript数组方法之map-映射
<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>三十课 - JavaScript数组方法之map-映射</title> <script src="http://res.30ke.cn/res/js/console.js"></script> </head> <body> <div id="main"></div> <script> var array1 = [1, 2, 3, 4]; console.log(array1.map(x => x * 2)); // 输出 [ 2, 4, 6, 8 ] </script> </body> </html>
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