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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>
- <script>
- function fn(x,y) {
- const sum = x + y;
- console.log(sum,'sum');
- console.log(this,'this');
- console.log(this.name,'name');
- }
- let obj = {
- name:"图图",
- }
- // fn(2,3)
- // fn.call(obj,2,3);
- // fn.apply(obj,[2,3]);
- fn.bind(obj,2,3)();
- /**
- * call bind apply
- * 1.bind无法直接调用 call和apply可以直接调用
- * 2.call和bind从第二项开始，要传入的参数逐个传入
- * 3.apply从第二项开始，要传入的参数以数组形式传入
- */
- </script>
- </body>
- </html>
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