首页手记 Vue结合原生js实现自定义组件自动生成

Vue结合原生js实现自定义组件自动生成

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JavaScript Vue.js

　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 class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="js/vue.js" type="text/javascript"></script>
</head>
<body>
<div id="main" class="mui-content">
</div>
</body>
<script class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="js/fuhao-components.js" type="text/javascript"></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>`
复制代码
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"> \

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