VUE实现密码验证与提示功能

<template>
 <div class="pwdTipContent" v-show="isShowTip">
 <dl>
 <dt>
 <i class="iWeak" :class="{active: degreeNumber >= 3 , normal: degreeNumber==1 || degreeNumber == 2}"></i>
 <i class="iMiddle" :class="{active: degreeNumber >= 3, normal: degreeNumber == 2}"></i>
 <i class="iStrong" :class="{active:degreeNumber>=3}"></i>
 <b class="degreeWeak" v-show='degreeNumber==1'>弱</b>
 <b class="degreeMiddle" v-show='degreeNumber==2'>中</b>
 <b class="degreeStrong" v-show='degreeNumber>=3'>强</b>
 <https://img.qb5200.com/download-x/dt>
 <dd>
 <i :class="{'el-icon-warning': !bPwd, 'active': bPwd === false, 'el-icon-success': bPwd}"></i>8-24 位
 <https://img.qb5200.com/download-x/dd>
 <https://img.qb5200.com/download-x/dl>
 </div>
</template>
<script>
 export default {
 name: "verifyPassWordTip",
 props: {
 password: {
 type: String
 },
 isShowTip: {
 type: Boolean
 }
 },
 data() {
 return {
 bPwd: null,//密码值和长度的验证
 degreeNumber: 0//密码复杂度的验证
 };
 },
 watch: {
 password() {
 this.initPassWord();
 }
 },
 methods: {
 /**
 * 密码加载
 **/
 initPassWord() {
 if (!this.password) {
  this.$data.bPwd = null; //没有值标签背景置灰
  this.$data.degreeNumber=0;
 } else {
  let objReturn = this.passwordValid(this.password);
  if (objReturn) {
  this.$data.bPwd = objReturn.bPwd;
  this.$data.degreeNumber = objReturn.degreeNumber;
  }
 }
 },
 /**
 * 密码验证（密码复杂度：(1)大写字母(2)小写字母(3)数字(4)特殊符号，密码至少需包含上述情形中的三种）
 * @param valPWD输入的密码信息
 * @return 返回验证信息
 **/
 passwordValid(valPwd) {
 let msg = "";
 let degreeNumber = 0;
 let bPwd = false;

 if (valPwd == null || valPwd.length < 8 || valPwd.length > 24 || valPwd.trim().length == "") {
  bPwd = false;
 } else {
  bPwd = true;
 }
 let arrVerify = [
  {regName: 'Number', regValue: /^.*[0-9]+.*/},
  {regName: 'LowerCase', regValue: /^.*[a-z]+.*/},
  {regName: 'UpperCase', regValue: /^.*[A-Z]+.*/},
  {regName: 'SpecialCharacters', regValue: /^.*[^a-zA-Z0-9]+.*/}
 ];
 let regNum = 0;// 记录匹配的次数
 for (let iReg = 0; iReg < arrVerify.length; iReg++) {
  if (arrVerify[iReg].regValue.test(valPwd)) {
  regNum = regNum + 1;
  }
 }
 degreeNumber = regNum;
 if (regNum <= 2) {
  msg = "密码必须包含大小写字母和数字";
 }
 let objReturn = {
  msg: msg,
  degreeNumber: degreeNumber,
  bPwd: bPwd
 };
 return objReturn;
 }
 }
 }
</script>
<style>
 .pwdTipContent .el-icon-warning{
 color:gray;
 }
 .pwdTipContent .el-icon-warning.active{
 color:red;
 }
 .pwdTipContent i.gray{
 color: gray;
 }
 .pwdTipContent .degreeWeak , .pwdTipContent .degreeMiddle{
 color: red;
 }
 .pwdTipContent .el-icon-success{
 color:green;
 }
 .pwdTipContent .degreeStrong {
 color: green;
 }
 i.iWeak.normal, i.iMiddle.normal {
 background: red;
 }
 i.iWeak.active {
 background: green;
 }
 i.iMiddle.active {
 background: green;
 }
 i.iStrong.active {
 background: green;
 }
 b.active {
 color: red;
 }
 .degreeStrong {
 color: green;
 }

 .pwdTipContent dt i {
 width: 28px;
 height: 10px;
 display: inline-block;
 background-color: gray;
 margin-right: 10px;
 }

 .pwdTipContent {
 color: #61688a;
 position: absolute;
 min-width: 200px;
 padding: 7px 0 7px 15px;
 background: #fff;
 top: -147px;
 border: 1px solid #e4e7ed;
 border-radius: 4px;
 box-shadow: 0 4px 12px 0 rgba(0, 0, 0, 0.4);
 font-size: 12px;
 }

 .pwdTipContent:after {
 width: 0;
 height: 0;
 overflow: hidden;
 content: "";
 }
 .pwdTipContent:after {
 position: absolute;
 bottom: -10px;
 left: 20px;
 border-top: 10px solid #fff;
 border-right: 10px dashed transparent;
 border-left: 10px dashed transparent;
 }
 .pwdTipContent dd, .pwdTipContent dt{
 text-align: left;
 }
</style>

<template>
 <div style="position: absolute; top: 40%; left:40%">
 <el-row style="width: 300px;">
 <el-col :span="24">
 <el-input v-model="password" @focus.capture.native='changePasswordTip(true)' @blur.capture.native='changePasswordTip(false)' auto-complete="new-password" type="password" placeholder='请输入密码' ></el-input>
 <div style="position: absolute">
  <verify-pass-word-tip :password="password" :isShowTip = 'isShowTip'></verify-pass-word-tip>
 </div>
 </el-col>
 </el-row>
 </div>
</template>
<script>
 import verifyPassWordTip from './verifyPassWordTip'
 export default {
 name: "VerifyPassWord",
 components: {
 verifyPassWordTip
 },
 data() {
 return {
 password: '',
 isShowTip: false
 }
 },
 methods: {
 /**
 * 改变密码提示是否显示
 **/
 changePasswordTip(isShow) {
 if (isShow) {
  this.isShowTip = true;
 } else {
  this.isShowTip = false;
 }
 },
 }
 }
</script>