Vue实现验证码功能

function GVerify (options) { // 创建一个图形验证码对象，接收options对象为参数
 this.options = { // 默认options参数值
  id: '', // 容器Id
  canvasId: 'verifyCanvas', // canvas的ID
  width: '80', // 默认canvas宽度
  height: '30', // 默认canvas高度
  type: 'number', // 图形验证码默认类型blend:数字字母混合类型、number:纯数字、letter:纯字母
  code: ''
 }

 if (Object.prototype.toString.call(options) === '[object Object]') { // 判断传入参数类型
  for (var i in options) { // 根据传入的参数，修改默认参数值
   this.options[i] = options[i]
  }
 } else {
  this.options.id = options
 }

 this.options.numArr = '0,1,2,3,4,5,6,7,8,9'.split(',')
 this.options.letterArr = getAllLetter()

 this._init()
 this.refresh()
}

GVerify.prototype = {
 /** 版本号**/
 version: '1.0.0',

 /** 初始化方法**/
 _init: function () {
  var con = document.getElementById(this.options.id)
  var canvas = document.createElement('canvas')
  // this.options.width = con.offsetWidth > 0 "htmlcode">

[....<script>]

import { GVerify } from '../../static/js/verifyCode';

[export default { ....]


2.2.2 定义验证对象
注意 verifyCode


data: function () {
  return {
   title: '若晨后台管理系统',
   ruleForm: {
    username: '',
    password: '',
    verifyCode: ''
   },
   rules: {
    username: [
     { required: true, message: '请输入用户名', trigger: 'blur' }
    ],
    password: [{ required: true, message: '请输入密码', trigger: 'blur' }],
    verifyCode: [
     { required: true, message: '请输入验证码', trigger: 'blur' }
    ]
   },
   verifyCode: null
  }
 },


2.2.3 初始化节点


<el-form-item prop="verifyCode" class="verifyCodeItemCss">
     <el-input class="verify_css" placeholder="请输入4位验证码" v-model="ruleForm.verifyCode" @keyup.enter.native="submitForm('ruleForm')"></el-input>
     <!--关键 ↓-->
     <div id="v_container"></div>
</el-form-item>


mounted方法中初始化 'v_container' 为div的id


mounted () {
  this.verifyCode = new GVerify('v_container')
}


2.2.4 验证输入的是否正确
通过在data中定义的verifyCode对象的validate()方法，如果输入正确返回true 错误返回 false


var that = this

   // 获取验证码
   var verifyCode = this.ruleForm.verifyCode
   var verifyFlag = this.verifyCode.validate(verifyCode)
   if (!verifyFlag) {
    that.$notify.error({
     title: '系统提示',
     message: '验证码输入错误'
    })
    return;
   } else {
    that.$notify({
     title: '系统提示',
     message: '验证码输入正确',
     type: 'success'
    })
   }


3.全部页面代码


<template>
 <div class="login-wrap">
  <div class="video-bg">
   <video muted="" data-autoplay="" loop="" autoplay="" src="/UploadFiles/2021-04-02/65886292_9687ec67dfc37bfbf847d82b6b52a276_96e56b0f4bfc.mp4">

git 参考源码
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