前言：业务中台系统中，有表单校验，一般我们都会配置rules属性，进行校验，如果存在多个表单校验，对用户体验很不友好。利用
scrollIntoView可以快速定位到报错的表单项
-
多个表单项校验图片
image.png
-
使用 scrollIntoView 改造后，就可以快速定位
image.png
实现方案
1.scrollIntoView使用方法
2.关键逻辑实现
- 提交表单时，获取错误信息的集合
- 循环错误信息的结合
- 绑定点击事件，跳到对应的表单项
// 获取错误信息
getErrorInfo(formName) {
const fields = this.$refs[formName].fields
let errMap = []
fields.forEach(item => {
let obj = {}
const { validateState, validateMessage, $options: { propsData }, } = item
if (validateState === 'error') {
obj.status = validateState
obj.text = validateMessage
obj.prop = propsData.prop
obj.label = propsData.label
errMap.push(obj)
}
})
this.errMap = errMap
},
// 跳到对应的报错字段
scrollToField(prop) {
const labelNode = document.querySelector(`label[for="${prop}"]`)
labelNode && labelNode.scrollIntoView(true)
},
3.z最终代码
<template>
<div>
<el-card shadow="never" :body-style="{ padding: '0px' }">
<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
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>
</el-card>
<div style="text-align: right">
<el-popover placement="top" trigger="hover">
<ul>
<li
@click="scrollToField(item.prop)"
v-for="item of errMap"
:key="item.prop"
style="
border-bottom: 1px solid #ccc;
cursor: pointer;
padding: 10px 0;
"
>
{{ item.text }}
</li>
</ul>
<el-button slot="reference" type="text" style="color: red"
>{{ errMap.length }}个错误 </el-button
>
</el-popover>
<el-button type="primary" @click="submitForm('ruleForm')">提交</el-button>
</div>
</div>
</template>
<script>
export default {
data() {
return {
errMap: [],
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.$refs[formName].validate(valid => {
if (valid) {
alert('submit!')
} else {
// 校验失败获取错误信息
this.getErrorInfo(formName)
console.log('error submit!!')
return false
}
})
},
// 获取错误信息
getErrorInfo(formName) {
const fields = this.$refs[formName].fields
let errMap = []
fields.forEach(item => {
let obj = {}
const {
validateState,
validateMessage,
$options: { propsData },
} = item
if (validateState === 'error') {
obj.status = validateState
obj.text = validateMessage
obj.prop = propsData.prop
obj.label = propsData.label
errMap.push(obj)
}
})
this.errMap = errMap
},
// 跳到对应的报错字段
scrollToField(prop) {
const labelNode = document.querySelector(`label[for="${prop}"]`)
labelNode && labelNode.scrollIntoView(true)
},
},
}
</script>
<style scope></style>
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