<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> body { font-family: "Microsoft YaHei", serif; } body, dl, dd, p, h1, h2, h3, h4, h5, h6 { margin: 0; } ol, ul, li { margin: 0; padding: 0; list-style: none; } img { border: none } </style> </head> <body> <script> // 某些字符串的方法数组也可以用 // let a = ["a","b","c"]; // console.log(a.indexOf("b")); // console.log(a.slice(1)); let a = ["a","b","c"]; a.splice(1,1,"d","e"); // 第一个参数是从哪开始切 // 第二个参数是切几个 // 后边的参数是添加的东西 console.log(a); </script> </body> </html>
21-7-数组相关api
猜你喜欢
转载自www.cnblogs.com/zhangyu666/p/11480109.html
今日推荐
周排行