Vue-rules Vue表单验证

 loginForm: {
        name: '',
        password: ''
      },
      loginRules: {
        /* 这里定义规则时候，名字必须是上面对象的已经声明过的字段。不然会报错 */
        name: [{ 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' }],
        password: []
      }

错误的例子

<template>
  <div class="login_content">
    <div class="login_box">
      <!--    头像区域  -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!--     登录表单区域 -->
      <el-form :model="loginForm" :rules="loginRules" class="login_form" label-width="0px">
        <!-- 账号        -->
        <el-form-item prop="userName">
          <el-input v-model="loginForm.name" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码       -->
        <el-form-item>
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
        </el-form-item>
        <!--    登录与重置按钮    -->
        <el-form-item class="login_button_parent">
          <el-button type="primary">登录</el-button>

          <el-button type="info">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'login',
  /* 组件中的数据 */
  data () {
    return {
      /* 登录请求的对象 */
      loginForm: {
        name: '',
        password: ''
      },
      loginRules: {
        password: [],
        /* 这个名字，没有在数据里面声明过所以上面引用的时候会错误 */
        userName: [{ 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' }]

      }
    }
  }

}
</script>

<style lang="less" scoped>
.login_content {
  background-color: aqua;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: white;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #eeeeee;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eeeeee;
    }
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 10px;
  box-sizing: border-box;
}

.login_button_parent {
  /*element-ui 的属性有个type type的值可以设置为flex*/
  display: flex;
  /*对齐方式，justify-content 是配合 flex使用的*/
  justify-content: flex-end;
}
</style>

正确的例子

<template>
  <div class="login_content">
    <div class="login_box">
      <!--    头像区域  -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!--     登录表单区域 -->
      <el-form :model="loginForm" :rules="loginRules" class="login_form" label-width="0px">
        <!-- 账号        -->
        <el-form-item prop="userName">
          <el-input v-model="loginForm.name" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码       -->
        <el-form-item>
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
        </el-form-item>
        <!--    登录与重置按钮    -->
        <el-form-item class="login_button_parent">
          <el-button type="primary">登录</el-button>

          <el-button type="info">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'login',
  /* 组件中的数据 */
  data () {
    return {
      /* 登录请求的对象 */
      loginForm: {
        name: '',
        password: ''
      },
      loginRules: {
        /* 这个名字，已经在数据里面声明过所以上面引用的时候不会错误 */

        name: [{
          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'
        }],
        password: []

      }
    }
  }

}
</script>

<style lang="less" scoped>
.login_content {
  background-color: aqua;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: white;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #eeeeee;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eeeeee;
    }
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 10px;
  box-sizing: border-box;
}

.login_button_parent {
  /*element-ui 的属性有个type type的值可以设置为flex*/
  display: flex;
  /*对齐方式，justify-content 是配合 flex使用的*/
  justify-content: flex-end;
}
</style>