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有的时候我们可能会遇到这种需求，用户点击某个按钮就可以增加一个同样的表单出来，点击一次增加一次。然后要用到深拷贝，Vue.js+ElementUI等等。效果大概如下，就是一个表单有下拉框和两个输入框，现在点击"添加表单"按钮之后就会多一个表单出来，点击"提交表单"后就同时提交两个表单的value值。
代码如下:
<template>
<div>
<div style="margin: 10px 0">
<el-button type="primary" @click="addForm">添加表单</el-button>
<el-button type="primary" @click="submit">提交表单</el-button>
</div>
<div v-for="(item, index) in List" :key="index">
<el-form ref="form" label-width="80px">
<el-form-item label="直播平台">
<el-select
v-model="item.platform"
:key="index"
placeholder="请选择直播平台"
>
<el-option
:label="item2.platformName"
v-for="(item2, index2) in platformNameList"
:key="index2"
:value="item2.platformValue"
>
</el-option>
</el-select>
</el-form-item>
<el-form-item label="粉丝量">
<el-input v-model="item.fanMount" :key="index"></el-input>
</el-form-item>
<el-form-item label="平台ID">
<el-input v-model="item.platformId" :key="index"></el-input>
</el-form-item>
</el-form>
</div>
</div>
</template>
<script>
export default {
data() {
return {
title: "巡查内容页",
personObj: {
platform: "",
fanMount: "",
platformId: "",
},
platformNameList: [
{
platformName: "快手",
platformValue: "1",
},
{
platformName: "抖音",
platformValue: "2",
},
{
platformName: "淘宝",
platformValue: "3",
},
],
List: [
{
platform: "",
fanMount: "",
platformId: "",
},
],
};
},
methods: {
//深拷贝
cloneObj(obj) {
let ret;
if (Array.isArray(obj)) {
//创建一个空数组
ret = [];
for (let i = 0; i < obj.length; i++) {
ret[i] = this.cloneObj(obj[i]);
}
return ret;
} else if (Object.prototype.toString.call(obj) === "[object Object]") {
ret = {};
for (let i in obj) {
ret[i] = this.cloneObj(obj[i]);
}
return ret;
} else {
return obj;
}
},
//添加表单
addForm() {
let arr = this.cloneObj(this.personObj);
console.log("arr", arr);
this.List.push(arr);
},
//提交表单
submit() {
console.log("this.List", this.List);
},
},
};
</script>
代码分析:
控制台打印看下效果:
现在假如说有个需求是，指定添加几项表单，而不是点一次加一次表单，效果如下,有三个按钮，最开始显示一个表单
当我点击"3个"按钮的时候，界面总共有三个表单，如下图：
代码如下:
<template>
<div>
<div style="margin: 10px 0">
<el-button type="primary" @click="add(3)">3个</el-button>
<el-button type="primary" @click="addForm">添加表单</el-button>
<el-button type="primary" @click="submit">提交表单</el-button>
</div>
<div v-for="(item, index) in List" :key="index">
<el-form ref="form" label-width="80px">
<el-form-item label="直播平台">
<el-select
v-model="item.platform"
:key="index"
placeholder="请选择直播平台"
>
<el-option
:label="item2.platformName"
v-for="(item2, index2) in platformNameList"
:key="index2"
:value="item2.platformValue"
>
</el-option>
</el-select>
</el-form-item>
<el-form-item label="粉丝量">
<el-input v-model="item.fanMount" :key="index"></el-input>
</el-form-item>
<el-form-item label="平台ID">
<el-input v-model="item.platformId" :key="index"></el-input>
</el-form-item>
</el-form>
</div>
</div>
</template>
<script>
export default {
data() {
return {
title: "巡查内容页",
personObj: {
platform: "",
fanMount: "",
platformId: "",
},
platformNameList: [
{
platformName: "快手",
platformValue: "1",
},
{
platformName: "抖音",
platformValue: "2",
},
{
platformName: "淘宝",
platformValue: "3",
},
],
List: [
{
platform: "",
fanMount: "",
platformId: "",
},
],
};
},
methods: {
cloneObj(obj) {
let ret;
if (Array.isArray(obj)) {
//创建一个空数组
ret = [];
for (let i = 0; i < obj.length; i++) {
ret[i] = this.cloneObj(obj[i]);
}
return ret;
} else if (Object.prototype.toString.call(obj) === "[object Object]") {
ret = {};
for (let i in obj) {
ret[i] = this.cloneObj(obj[i]);
}
return ret;
} else {
return obj;
}
},
add(a) {
this.addForm(a);
},
addForm(a) {
let arr = this.cloneObj(this.personObj);
console.log("arr", arr);
this.List.push(arr);
a--;
if (a > 0) {
this.addForm(a - 1);
}
},
submit() {
console.log("this.list", this.List);
},
},
};
</script>
<style>
</style>
代码分析如下: 点击按钮的add方法的时候传入总共的表单个数，然后在添加表单的方法addForm里用了自减和判断、递归来实现连续点击时的拷贝等。然后我们试一下效果
控制台打印看一下 到此这篇关于详解Vue里循环form表单项实例的文章就介绍到这了,更多相关Vue循环form表单项内容请搜索极客世界以前的文章或继续浏览下面的相关文章希望大家以后多多支持极客世界！ |
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