| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title></title> | |
| </head> | |
| <body> | |
| <script> | |
| //完成以下代码段，实现b数组对a数组的拷贝，方法越多越好 | |
| var a=[1,"yes",3], | |
| b; | |
| // 1.数组遍历,push | |
| // b=new Array(); | |
| // for(var i=0;i<a.length;i++){ | |
| // b.push(a[i]) | |
| // } | |
| // 2.concat() 连接两个或多个数组 | |
| // b=[].concat(a) | |
| // 3.slice() | |
| b=a.slice(0) | |
| console.log(b) | |
| </script> | |
| </body> | |
| </html> | |