vue之elementui表单验证最基本实例

使用，在模板中

在js中

<template>
  <div class="login-page">

    <div class="login-box">
      <div class="login-logo">
        <a href="../../index2.html"><b>vue</b>商城</a>
      </div>
      <div class="card">
        <div class="card-body login-card-body">
          <p class="login-box-msg">帐户登录</p>
          <el-form :model="ruleForm"
                   :rules="rules"
                   ref="ruleForm"
                   class="demo-form-inline">
            <el-form-item prop="username">
              <el-input placeholder="账号"
                        suffix-icon="iconfont icon-index"
                        v-model="ruleForm.username"></el-input>
            </el-form-item>
            <el-form-item prop="password">
              <el-input type="password"
                        placeholder="密码"
                        suffix-icon="el-icon-date"
                        v-model="ruleForm.password"></el-input>
            </el-form-item>
            <el-form-item class="btns">
              <el-button type="primary"
                         @click="submitForm('ruleForm')">提交</el-button>
              <el-button @click="reset">重置</el-button>
            </el-form-item>
          </el-form>
          <p class="mb-1">
            <a href="forgot-passwordword.html">忘记密码</a>
          </p>
          <p class="mb-0">
            <a href="register.html"
               class="text-center">注册新会员</a>
          </p>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    // 自定义验证规则
    var validateUser = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请输入账号'))
      } else {
        callback(console.log('账号验证成功'))
      }
    }
    return {
      ruleForm: {
        username: '11',
        password: '111'
      },
      rules: {
        username: [
          { validator: validateUser, trigger: 'blur' }

        ],
        password: [
          { required: true, message: '请输入活动名称', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    submitForm (formName) {
      this.$refs[formName].validate((valid) => {
        if (!valid) return console.log('error submit!!') // 如果验证不通过
        console.log('success')
      })
    },
    reset () {
      this.$refs.ruleForm.resetFields()
    }
  }
}
</script>
<style lang="less" scope>
.btns {
  display: flex;
  flex-direction: row-reverse;
}
</style>