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超轻量级php框架startmvc

Vue结合原生js实现自定义组件自动生成示例

更新时间:2020-04-21 00:26:10 作者:startmvc
就目前三大前端主流数据驱动框架(vue,ng,react)而言,均具有创建自定义组件的api,但都是

就目前三大前端主流数据驱动框架(vue,ng,react)而言,均具有创建自定义组件的api,但都是必须先做到事先写好挂载点,这个挂载点可以是原有静态元素标签也可以是自定义模板;对于多种组件通过同一数据流生成的,如果事先在页面上写好挂载点(mounted),然后通过dom操作去动态添加,会遇到类似这样一条错误提示信息:Failed to execute 'appendChild' on 'Node': parameter 1 is not of type 'Node'.(…)。这又是为何呢,下一步该怎么办?

原因是任何dom操作的对象必须是符合W3C标准的元素,除非如下所述的,改写生成html元素对象的原型(HTMLElement.prototype)并注册自定义元素,从而实现动态生成自定义组件的效果。

不过,大家都明白使用数据驱动框架的初衷就是尽可能避免dom操作,而如下代码中还是有一些dom操作的,就目前认知水平而言,感觉这些必要的dom操作还是避免不了的。其它不多说了,直接看代码。。。


<!DOCTYPE html>
<html>
<head>
 <meta charset="utf-8">
 <meta http-equiv="Content-type" content="text/html,charset=utf-8"/>
 <meta http-equiv="X-UA-Compatible" content="IE-edge">
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <link href="css/mui.min.css" rel="stylesheet">
 <link href="css/app.css" rel="stylesheet">
 <script src="js/vue.js" type="text/javascript"></script>
</head>
<body>
<div id="main" class="mui-content">
</div>
</body>
<script src="js/fuhao-components.js" type="text/javascript"></script>

<script>

 var jsonData = [
 {
 "keyname": "姓名鄂然失色而热重重中之重重中之重杂志的热热",
 "type": "text",
 "key": "name11"
 }, {
 "value": "姓名鄂之重杂志的热热",
 "key": "name11"
 }, {
 "keyname": "姓名鄂然失色而热热热热是重中之重重中之重重中之重杂志的热热",
 },
 {
 "keyname": "姓名鄂然失色而热热热热是重中之重重中之重重中之重杂志的热热",
 "type": "textarea",
 "key": "name"
 },
 {
 "keyname": "性别",
 "type": "radio",
 "key": "sex",
 "values": [
 {
 "key": "man",
 "value": "男辅导班"
 },
 {
 "key": "women",
 "value": "女"
 }
 ]
 },
 {
 "keyname": "复选",
 "type": "checkbox",
 "key": "checkbox",
 "values": [
 {
 "key": "man",
 "value": "男"
 },
 {
 "key": "women",
 "value": "女"
 }
 ]
 },
 {
 "keyname": "类型",
 "type": "select",
 "key": "type1",
 "values": [
 {
 "key": "type1",
 "value": "类型1"
 },
 {
 "key": "type2",
 "value": "类型2"
 },
 {
 "key": "type3",
 "value": "类型3"
 },
 {
 "key": "type4",
 "value": "类型4"
 }
 ]
 },
 {
 "keyname": "定位",
 "type": "gps",
 "key": "btn",
 "value": "地图获取定位"
 },
 {
 "keyname": "拍照",
 "type": "photo",
 "key": "btn",
 "value": "拍照"
 }
 ];
 (function () {
 AnalyJson(jsonData);
 })();
 function AnalyJson(data) {
 if ('id' in data) {
 arguments.callee(data.values);
 } else {
 if ('name' in data) {
 htmlname = data.name;
 CreateInputViewer(data.name);
 arguments.callee(data.values);
 } else {
 if ('type' in data) {
 CreateInputViewer(data);
 } else {
 for (var p in data) {
 CreateInputViewer(data[p]);
 }
 }
 }
 }
 }
 function CreateInputViewer(data) {
 switch (data.type) {
 case 'text': {
 fh_C(data, 'c-input-text' + '-' + data.key, 'fhInputText', textTpl);
 break;
 }
 case 'textarea': {
 fh_C(data, 'c-textarea' + '-' + data.key, 'fhInputTextarea', textareaTpl);
 break;
 }
 case 'radio': {
 fh_C(data, 'c-input-radio' + '-' + data.key, 'fhInputTextarea', radioTpl);
 break;
 }
 case 'checkbox': {
 fh_C(data, 'c-input-checkbox' + '-' + data.key, 'fhInputCheckbox', checkboxTpl);
 break;
 }
 case 'select': {
 fh_C(data, 'c-select' + '-' + data.key, 'fhSelect', selectTpl);
 break;
 }
 case 'photo': {
 fh_C(data, 'c-photo' + '-' + data.key, 'fhPhoto', photoTpl);
 break;
 }
 case 'gps': {
 fh_C(data, 'c-gps' + '-' + data.key, 'fhGPS', gpsTpl);
 break;
 }
 default: {
 fh_C(data, 'c-default' + '-' + data.key, 'fhInputDefault', defaultTpl);
 break;
 }

 }
 }
 function fh_C(d, c, cn, tpl) {
 console.log(d);
 Vue.component(c, {
 template: tpl,
// props:['key','keyname','values','value'],
 data: function () {
 return d
 }
 });
 new Vue({
 el: '.mui-content',
 components: {
 cn: cn
 },
 });
 var MyElementProto = Object.create(HTMLElement.prototype);
 MyElementProto.createdCallback = function () {
 this.innerHTML = tpl
 };
 var MyComponent = document.registerElement(c, {prototype: MyElementProto});
 document.querySelector('.mui-content').appendChild(new MyComponent());
 }
</script>
</html>

为了保持代码的可维护性及易读性,我将模板部分单独放在fuhao-components.js的文件里边,如下所示:


var textTpl='';
<div class="mui-content-padded">
 <input :type="type" :name="key" :placeholder="keyname" >
</div>
 
var textareaTpl= '';
<div class="mui-content-padded ">
 <textarea rows="5" :placeholder="keyname"> 
 </textarea>
</div>
 
var radioTpl= '';
<form class="mui-input-group mui-content-padded">
 <div class="mui-input-row mui-radio mui-left"v-for="value in values">
 <label>{{value.key}}</label>
 <input :name="key" :type="type" :value="key">
 </div>
</form>
var checkboxTpl= '';
<form class="mui-input-group mui-content-padded">
 <div class="mui-input-row mui-checkbox mui-left"v-for="value in values">
 <label>{{value.key}}</label>
 <input :name="key" :type="type" :value="key">
 </div>
</form>
var selectTpl= '';
 <div class="mui-content-padded">
 <h5 class="mui-content-padded" v-text="keyname"></h5>
 <select class="mui-btn mui-btn-block " :name="key">
 <option value="key" v-text="value.key" v-for="value in values">{{value.key}}</option>
 </select>
 </div>

var photoTpl= '';
<div class="mui-content-padded">
 <span v-text="keyname"></span>
 <button :name="key" onclick="takePhoto(this.name)" class="mui-btn mui-btn-primary">拍照</button> 
 <img :id="key" height="70" width="100" class="img-rounded">
</div>
 
var gpsTpl='';
<div class="mui-content col-xs-12">
 <button class="mui-btn mui-btn-primary" :id="key" onclick="takeLocation(this.id)">
 获取定位
 </button>
</div>
 
var defaultTpl= '';
<div class="mui-content-padded " v-if="key">
 <ul class="mui-table-view">
 <li class="mui-table-view-cell mui-media">
 <span class="fuhaoKey" v-text="key"></span>
 <span class="fuhaoValue" v-text="value"></span>
 </li>
 </ul >
</div>

最终渲染效果如下:

鉴于vue结合dom操作动态生成自定义组件,控制台会报一定的错误这一点bug还在努力修复中,可能需要更加深入地了解vue数据绑定及传递机制与js动态注册自定义组件的深入领会,继续努力中。。。

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。