# 表單驗證 js版 [鏈接地址](https://element.eleme.io/#/zh-CN/component/form)
> 注意點
> 1、el-form 對應一個form所有字段的集合
> 驗證提示需要配合 el-form-item prop
> 最后提交按鈕根據$refs來執行
```
<el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
<el-form-item label="活動名稱" prop="name">
<el-input v-model="ruleForm.name"></el-input>
</el-form-item>
<el-form-item label="活動區域" prop="region">
<el-select v-model="ruleForm.region" placeholder="請選擇活動區域">
<el-option label="區域一" value="shanghai"></el-option>
<el-option label="區域二" value="beijing"></el-option>
</el-select>
</el-form-item>
<el-form-item label="活動時間" required>
<el-col :span="11">
<el-form-item prop="date1">
<el-date-picker type="date" placeholder="選擇日期" 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="選擇時間" v-model="ruleForm.date2" style="width: 100%;"></el-time-picker>
</el-form-item>
</el-col>
</el-form-item>
<el-form-item label="即時配送" prop="delivery">
<el-switch v-model="ruleForm.delivery"></el-switch>
</el-form-item>
<el-form-item label="活動性質" prop="type">
<el-checkbox-group v-model="ruleForm.type">
<el-checkbox label="美食/餐廳線上活動" name="type"></el-checkbox>
<el-checkbox label="地推活動" name="type"></el-checkbox>
<el-checkbox label="線下主題活動" name="type"></el-checkbox>
<el-checkbox label="單純品牌曝光" name="type"></el-checkbox>
</el-checkbox-group>
</el-form-item>
<el-form-item label="特殊資源" prop="resource">
<el-radio-group v-model="ruleForm.resource">
<el-radio label="線上品牌商贊助"></el-radio>
<el-radio label="線下場地免費"></el-radio>
</el-radio-group>
</el-form-item>
<el-form-item label="活動形式" 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')">立即創建</el-button>
<el-button @click="resetForm('ruleForm')">重置</el-button>
</el-form-item>
</el-form>
<script>
export default {
data() {
return {
ruleForm: {
name: '',
region: '',
date1: '',
date2: '',
delivery: false,
type: [],
resource: '',
desc: ''
},
rules: {
name: [
{ required: true, message: '請輸入活動名稱', trigger: 'blur' },
{ min: 3, max: 5, message: '長度在 3 到 5 個字符', trigger: 'blur' }
],
region: [
{ required: true, message: '請選擇活動區域', trigger: 'change' }
],
date1: [
{ type: 'date', required: true, message: '請選擇日期', trigger: 'change' }
],
date2: [
{ type: 'date', required: true, message: '請選擇時間', trigger: 'change' }
],
type: [
{ type: 'array', required: true, message: '請至少選擇一個活動性質', trigger: 'change' }
],
resource: [
{ required: true, message: '請選擇活動資源', trigger: 'change' }
],
desc: [
{ required: true, message: '請填寫活動形式', 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>
```
*****
# rules規則
> message[str] 提示消息
> trigger: [blur || change]
~~~
rules: [
//必填
{
required: true
message: '請輸入名稱',
trigger: 'blur'
},
// 長度
{
min: 3,
max: 5,
message: '長度在 3 到 5 個字符',
trigger: 'blur'
}
]
//正則
{
pattern: /^\[\\-\\+\]?(0?\\d{1,2}\\.\\d{1,5}|1\[0-7\]?\\d{1}\\.\\d{1,15}|180\\.0{1,15})$/,
message: '請確認格式',
trigger: 'blur'
}
~~~
