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