element表单验证

<template>
  <el-dialog title="修改密码"
             :visible.sync="isChangeDialog"
             width="23%"
             ref="dialog"
             :modal-append-to-body='false'
             :before-close="close"
             class="changepwd"
  >
    <div class="diolag-details">
      <el-form class="user-account-key" ref="form" :model="form" :rules="rules" label-width="100px">
        <el-form-item label="原密码" prop="oldpwd">
          <el-input placeholder="请输入原密码" v-model="form.oldpwd" @blur="getoldpwd"></el-input>
        </el-form-item>
        <el-form-item label="新密码" prop="newpwd">
          <el-input type="password" placeholder="请设置新密码" v-model="form.newpwd"></el-input>
        </el-form-item>
        <el-form-item label="确认密码" prop="newpwdagin">
          <el-input type="password" placeholder="请确认新密码" v-model="form.newpwdagin"></el-input>
        </el-form-item>
        <el-form-item class="dialog-footer">
          <el-button @click="changePwd('form')">保 存</el-button>
          <el-button type="primary" @click="close">取 消</el-button>
        </el-form-item>
      </el-form>
    </div>
  </el-dialog>
</template>

<script>
  import {upPassword} from "../../request/login"
  export default {
    name: "ChangePassword",
    data(){
      let validateNewPassword = (rule, value, callback) => {
        if (value === this.oldpwd) {
          callback(new Error('新密码不能与原密码相同!'))
        } else {
          callback()
        }
      };
      let validateNewPassword2 = (rule, value, callback) => {
        if (value !== this.form.newpwd) {
          callback(new Error('与新密码不一致!'))
        } else {
          callback()
        }
      };
      let validateOldPassword = (rule, value, callback) => {
        if (value !== this.oldpwd) {
          callback(new Error('请输入正确的密码!'))
        }else {
          callback()
        }
      };
      return{
        isChangeDialog:false,
        form:{},
        oldpwd:'',
        userid:'',
        newpwd : '',
        newpwdagin:'',
        rules: {
          oldpwd: [
            { required: true, message: '请输入原密码', trigger: 'blur' },
            { validator: validateOldPassword, trigger: 'blur' }
          ],
          newpwd: [
            { required: true, message: '请设置新密码', trigger: 'blur' },
            { validator: validateNewPassword, trigger: 'blur' }
          ],
          newpwdagin: [
            { required: true, message: '请确认新密码', trigger: 'blur' },
            { validator: validateNewPassword2, trigger: 'blur' }
          ]
        }
      }
    },
    methods:{
      close(){
        this.$store.dispatch('changeUserpwd',false)
      },
      getoldpwd(){
        this.oldpwd = sessionStorage.getItem('pwd')
      },
      changePwd (formName) {
        this.$store.dispatch('changeUserpwd',false);
        this.$refs[formName].validate(valid => {
          if (valid) {
            upPassword(this.userid,this.newpwd).then(res => {
              this.$router.push('/Login');
              this.$message({
                message:'密码修改成功',
                type:'success'
              })
            }).catch(err => {
              this.$message({
                message:'密码修改失败',
                type:'error'
              });
              console.log(err)
            })
          } else {
            this.$message.error('请正确填写表单');
            return false
          }
        });
        this.$refs[formName].resetFields();
      },
    },
    watch:{
      '$store.state.changePwd' :function (newVal) {
        this.isChangeDialog  = newVal;
      }
    }
  }
</script>

<style lang="scss" scoped>
  .diolag-details{
    margin-top: 10px;
  }
</style>

用的element-dialog，将弹框组件化，所以用vuex来改变弹框的显隐藏。

密码为用户登录时的密码，将其存储在本地，判断表单里的原密码是否与其相同，采用了element自带的表单验证规则

在store.js里设置dialog的初始值

import Vue from 'vue'
import Vuex from 'vuex'

Vue.use(Vuex)

export default new Vuex.Store({
  state: {
    changePwd:false,
  },
  mutations: {
    changepwd(state,flag){
      state.changePwd = flag
    }
  },
  actions: {
    changeUserpwd({commit},flag){
      commit('changepwd',flag)
    }
  }
})