Example of simple form validation function implemented in JS

This article mainly introduces the simple form verification function implemented by JS, involving js's acquisition, judgment, focus setting and other related operation skills for form submission content. Friends who are interested in js can refer to the following This article

The example of this article describes the simple form validation function implemented by JS. Share it with everyone for your reference, the details are as follows:

Source code:

姓名:


年龄:
爱好:爬山
游泳
网球
乒乓球


密码：


重复密码:


备注:

myjs1.js file code:

// JavaScript Document
function checkit()
{ var flag = false;
 for(var i=0;i
Copy after login

Note: Use var to declare variables in js, Define functions Use function,

This example can realize the verification of hobbies (cannot be empty), and whether the passwords are consistent , and the length of the password must be greater than 8, and whether the remark is empty! In addition, the css file is left to the reader to beautify it~

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