javascript - ElementUI 中的 $ref 是什么意思?
问题描述
我现在正在研究元素ui,在in方法$
之前有一个符号。没有符号是什么意思?ref
submitForm
<template>
<el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="120px" class="demo-ruleForm">
<el-form-item label="Activity name" prop="name">
<el-input v-model="ruleForm.name"></el-input>
</el-form-item>
<el-form-item label="Activity zone" prop="region">
<el-select v-model="ruleForm.region" placeholder="Activity zone">
<el-option label="Zone one" value="shanghai"></el-option>
<el-option label="Zone two" value="beijing"></el-option>
</el-select>
</el-form-item>
<el-form-item label="Activity time" required>
<el-col :span="11">
<el-form-item prop="date1">
<el-date-picker type="date" placeholder="Pick a date" 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="Pick a time" v-model="ruleForm.date2" style="width: 100%;"></el-time-picker>
</el-form-item>
</el-col>
</el-form-item>
<el-form-item label="Instant delivery" prop="delivery">
<el-switch v-model="ruleForm.delivery"></el-switch>
</el-form-item>
<el-form-item label="Activity type" prop="type">
<el-checkbox-group v-model="ruleForm.type">
<el-checkbox label="Online activities" name="type"></el-checkbox>
<el-checkbox label="Promotion activities" name="type"></el-checkbox>
<el-checkbox label="Offline activities" name="type"></el-checkbox>
<el-checkbox label="Simple brand exposure" name="type"></el-checkbox>
</el-checkbox-group>
</el-form-item>
<el-form-item label="Resources" prop="resource">
<el-radio-group v-model="ruleForm.resource">
<el-radio label="Sponsorship"></el-radio>
<el-radio label="Venue"></el-radio>
</el-radio-group>
</el-form-item>
<el-form-item label="Activity form" 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')">Create</el-button>
<el-button @click="resetForm('ruleForm')">Reset</el-button>
</el-form-item>
</el-form>
</template>
<script>
export default {
data() {
return {
ruleForm: {
name: '',
region: '',
date1: '',
date2: '',
delivery: false,
type: [],
resource: '',
desc: ''
},
rules: {
name: [
{ required: true, message: 'Please input Activity name', trigger: 'blur' },
{ min: 3, max: 5, message: 'Length should be 3 to 5', trigger: 'blur' }
],
region: [
{ required: true, message: 'Please select Activity zone', trigger: 'change' }
],
date1: [
{ type: 'date', required: true, message: 'Please pick a date', trigger: 'change' }
],
date2: [
{ type: 'date', required: true, message: 'Please pick a time', trigger: 'change' }
],
type: [
{ type: 'array', required: true, message: 'Please select at least one activity type', trigger: 'change' }
],
resource: [
{ required: true, message: 'Please select activity resource', trigger: 'change' }
],
desc: [
{ required: true, message: 'Please input activity form', 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>
解决方案
这没什么特别的,只是在键上添加了一个标记,以便清楚它属于 elementUI 并有助于确保它不会与您定义的键发生冲突。该$refs
对象包含 Vue 组件。
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