vue表单验证库async-validator的使用 elementUi + form

爱被打了一巴掌 2023-02-23 05:05 28阅读 0赞

## vue表单验证库async-validator的使用 elementUi + form ##

目前使用vue在构建登录注册页面的时候,一般都是引入elementUi的form组件.它添加了async-validator.

大幅提升了开发效率.async-validator是一个用来验证数据规则的一个库.它的github地址是https://github.com/yiminghe/async-validator .我们可以在elementui里直接使用它.下面介绍它的使用方法.

其实很简单,我们直接复制eui官网上的代码.早form组件里.它大概长这样儿:

![img][]

下面我附上全部的代码:

<template>
     
        <div>
            <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
                <el-form-item label="活动名称" prop="name">
                    <el-input v-model="ruleForm.name"></el-input>
                </el-form-item>
                <el-form-item label="活动区域" prop="region">
                    <el-select v-model="ruleForm.region" placeholder="请选择活动区域">
                        <el-option label="区域一" value="shanghai"></el-option>
                        <el-option label="区域二" value="beijing"></el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="活动时间" required>
                    <el-col :span="11">
                        <el-form-item prop="date1">
                            <el-date-picker type="date" placeholder="选择日期" v-model="ruleForm.date1" style="width: 100%;"></el-date-picker>
                        </el-form-item>
                    </el-col>
                    <el-col class="line" :span="2">-</el-col>
                    <el-col :span="11">
                        <el-form-item prop="date2">
                            <el-time-picker type="fixed-time" placeholder="选择时间" v-model="ruleForm.date2" style="width: 100%;"></el-time-picker>
                        </el-form-item>
                    </el-col>
                </el-form-item>
                <el-form-item label="即时配送" prop="delivery">
                    <el-switch v-model="ruleForm.delivery"></el-switch>
                </el-form-item>
                <el-form-item label="活动性质" prop="type">
                    <el-checkbox-group v-model="ruleForm.type">
                        <el-checkbox label="美食/餐厅线上活动" name="type"></el-checkbox>
                        <el-checkbox label="地推活动" name="type"></el-checkbox>
                        <el-checkbox label="线下主题活动" name="type"></el-checkbox>
                        <el-checkbox label="单纯品牌曝光" name="type"></el-checkbox>
                    </el-checkbox-group>
                </el-form-item>
                <el-form-item label="特殊资源" prop="resource">
                    <el-radio-group v-model="ruleForm.resource">
                        <el-radio label="线上品牌商赞助"></el-radio>
                        <el-radio label="线下场地免费"></el-radio>
                    </el-radio-group>
                </el-form-item>
                <el-form-item label="活动形式" prop="desc">
                    <el-input type="textarea" v-model="ruleForm.desc"></el-input>
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" @click="submitForm('ruleForm')">立即创建</el-button>
                    <el-button @click="resetForm('ruleForm')">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </template>
    <script>
    export default {
      data() {
        return {
          ruleForm: {
            name: "",
            region: "",
            date1: "",
            date2: "",
            delivery: false,
            type: [],
            resource: "",
            desc: ""
          },
          rules: {
            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" }
            ],
            region: [
              { required: true, message: "请选择活动区域", trigger: "change" }
            ],
            date1: [
              {
                type: "date",
                required: true,
                message: "请选择日期",
                trigger: "change"
              }
            ],
            date2: [
              {
                type: "date",
                required: true,
                message: "请选择时间",
                trigger: "change"
              }
            ],
            type: [
              {
                type: "array",
                required: true,
                message: "请至少选择一个活动性质",
                trigger: "change"
              }
            ],
            resource: [
              { required: true, message: "请选择活动资源", trigger: "change" }
            ],
            desc: [{ required: true, message: "请填写活动形式", trigger: "blur" }]
          }
        };
      },
      methods: {
        submitForm(formName) {
          this.$refs[formName].validate(valid => {
            if (valid) {
              alert("submit!");
            } else {
              console.log("error submit!!");
              return false;
            }
          });
        },
        resetForm(formName) {
          this.$refs[formName].resetFields();
        }
      }
    };
    </script>

这是直接复制的eui的官网代码.使用也非常简单.当然肯定要先引入eui啊.script标签里的rules是一个对象,是所有的验证规则.比如对象内的第一个

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” \}

\],

它表示一个验证规则,数组内共两项,required: true 表示必填项.当然 你也可以更改false为非必填. message为提示的文字信息.trigger为事件类型. min和max一看就懂.不用解释了.需要说的是,它还可以填写正则.因为官网复制下来的这份代码没有这一项.如果要使用,就在数组内添加.比如添加 \{ pattern: /1\{1,11\}$/, message: ‘联系人手机号码的格式错误!’, trigger: ‘blur’ \}; 具体的信息一看就懂.也不用解释了. 总之 ,验证规则就这三项, 规则 提示信息 和 事件类型.

然后在视图使用就更简单了. :rules绑定验证对象. 每一项用prop绑定验证规则. 使用效果如图:

在我没有输入信息的情况下点击立即创建 会有以下提示:

![img][img 1]

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1.  0-9-\_ ↩︎

[img]: https://img-blog.csdn.net/20181006141128920?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1FpbmdXYVhpZVpp/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[img 1]: https://img-blog.csdn.net/20181006142753300?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1FpbmdXYVhpZVpp/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70