html頁面引入vue組件之http-vue-loader.js解讀
html頁面引入vue組件之http-vue-loader.js
首先這種方法不推薦，日常工作中也不會在html裡面引入一個vue文件，隻是為瞭有時候方便測試才會這麼做
1.創建my-component.vue
<template>
<div class="hello">Hello {{who}}</div>
</template>
<script>
module.exports = {
data: function() {
return {
who: 'world'
}
}
}
</script>
<style>
.hello {
background-color: #ffe;
}
</style>
2.創建index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<!-- 引入樣式 -->
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css" rel="external nofollow" >
<!-- 先引入 Vue -->
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<!-- 引入 http-vue-loader -->
<script src="https://unpkg.com/http-vue-loader"></script>
</head>
<body>
<div id="app">
<my-component></my-component>
</div>
</body>
<!-- 引入組件庫 -->
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<script>
// 使用httpVueLoader
Vue.use(httpVueLoader);
new Vue({
el: '#app',
data: function () {
return { visible: false }
},
components: {
// 將組建加入組建庫
'my-component': 'url:./component/my-component.vue'
}
})
</script>
</html>
這樣就可以直接在html頁面裡面引用vue文件，而不需要從頭開始創建一個新的vue項目，方便日常測試使用
httpVueLoader的其他組件載入方式可查看這裡
單頁面vue項目註冊使用組件(使用httpVueloader)
主要是最近寫的項目涉及到,就順便記錄一下,
使用的概率不是很大啊畢竟現在大部分都是直接搭的項目組件正常方式使用組件即可
安裝並引入插件插件
既然是單頁面使用,最簡單快捷的就是直接script引用瞭,這裡我就直接把文件放出來自取好瞭,今天百度網盤有點卡分享不出來,文件又比較長,就放文章最末尾吧
<script src="./lib/httpVueLoader.js" type="text/javascript" charset="utf-8"></script>
準備組件
隨便畫個組件反正也就測試用用
<template>
<div class="test">
<p>{{name}}</p>
<p>{{state}}</p>
</div>
</template>
<script>
module.exports = {
name:'test',
data(){
return{
name:222
}
},
props:{
state:{
type:String
}
}
}
</script>
<style>
</style>
引用
引用方法有好幾種 這裡我就拿我用的來舉例吧,直接上父組件代碼,首先是html頁面
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="renderer" content="webkit|ie-comp|ie-stand">
<title></title>
<link rel="stylesheet" type="text/css" href="PCdemo/src/js&css/mainPage.css" rel="external nofollow" />
</head>
<body>
<!-- 容器 -->
<div id="mainpage">
<p>這是父組件頁面</p>
<!--組件測試 -->
<test></test>
</div>
<!-- vue2.6.11 -->
<script src="./lib/vue.js"></script>
<!-- 組件測試 -->
<script src="./lib/httpVueLoader.js" type="text/javascript" charset="utf-8"></script>
<!-- 自定義js -->
<script src="PCdemo/src/js&css/mainPage.js" type="text/javascript" charset="utf-8"></script>
</body>
</html>
然後是js頁面,當然全寫一個html也行啊看個人喜好,這裡因為項目需求兼容ie,所以寫的比較原始
var appVue = new Vue({
el: "#mainpage",
components:{
'test': httpVueLoader('../PCdemo/src/components/test.vue')
},
data: function() {
return {
state:'1111'
}
}
})
那麼效果就完成瞭
插件的其他註冊使用組件方法
組件官網 還提供瞭其他註冊引入方法,講的比較細致啊這裡就不贅述瞭 有興趣可以自己去看看
插件js文件
(function umd(root,factory){
if(typeof module==='object' && typeof exports === 'object' )
module.exports=factory()
else if(typeof define==='function' && define.amd)
define([],factory)
else
root.httpVueLoader=factory()
})(this,function factory() {
'use strict';
var scopeIndex = 0;
StyleContext.prototype = {
withBase: function(callback) {
var tmpBaseElt;
if ( this.component.baseURI ) {
// firefox and chrome need the <base> to be set while inserting or modifying <style> in a document.
tmpBaseElt = document.createElement('base');
tmpBaseElt.href = this.component.baseURI;
var headElt = this.component.getHead();
headElt.insertBefore(tmpBaseElt, headElt.firstChild);
}
callback.call(this);
if ( tmpBaseElt )
this.component.getHead().removeChild(tmpBaseElt);
},
scopeStyles: function(styleElt, scopeName) {
function process() {
var sheet = styleElt.sheet;
var rules = sheet.cssRules;
for ( var i = 0; i < rules.length; ++i ) {
var rule = rules[i];
if ( rule.type !== 1 )
continue;
var scopedSelectors = [];
rule.selectorText.split(/\s*,\s*/).forEach(function(sel) {
scopedSelectors.push(scopeName+' '+sel);
var segments = sel.match(/([^ :]+)(.+)?/);
scopedSelectors.push(segments[1] + scopeName + (segments[2]||''));
});
var scopedRule = scopedSelectors.join(',') + rule.cssText.substr(rule.selectorText.length);
sheet.deleteRule(i);
sheet.insertRule(scopedRule, i);
}
}
try {
// firefox may fail sheet.cssRules with InvalidAccessError
process();
} catch (ex) {
if ( ex instanceof DOMException && ex.code === DOMException.INVALID_ACCESS_ERR ) {
styleElt.sheet.disabled = true;
styleElt.addEventListener('load', function onStyleLoaded() {
styleElt.removeEventListener('load', onStyleLoaded);
// firefox need this timeout otherwise we have to use document.importNode(style, true)
setTimeout(function() {
process();
styleElt.sheet.disabled = false;
});
});
return;
}
throw ex;
}
},
compile: function() {
var hasTemplate = this.template !== null;
var scoped = this.elt.hasAttribute('scoped');
if ( scoped ) {
// no template, no scopable style needed
if ( !hasTemplate )
return;
// firefox does not tolerate this attribute
this.elt.removeAttribute('scoped');
}
this.withBase(function() {
this.component.getHead().appendChild(this.elt);
});
if ( scoped )
this.scopeStyles(this.elt, '['+this.component.getScopeId()+']');
return Promise.resolve();
},
getContent: function() {
return this.elt.textContent;
},
setContent: function(content) {
this.withBase(function() {
this.elt.textContent = content;
});
}
};
function StyleContext(component, elt) {
this.component = component;
this.elt = elt;
}
ScriptContext.prototype = {
getContent: function() {
return this.elt.textContent;
},
setContent: function(content) {
this.elt.textContent = content;
},
compile: function(module) {
var childModuleRequire = function(childURL) {
return httpVueLoader.require(resolveURL(this.component.baseURI, childURL));
}.bind(this);
var childLoader = function(childURL, childName) {
return httpVueLoader(resolveURL(this.component.baseURI, childURL), childName);
}.bind(this);
try {
Function('exports', 'require', 'httpVueLoader', 'module', this.getContent()).call(this.module.exports, this.module.exports, childModuleRequire, childLoader, this.module);
} catch(ex) {
if ( !('lineNumber' in ex) ) {
return Promise.reject(ex);
}
var vueFileData = responseText.replace(/\r?\n/g, '\n');
var lineNumber = vueFileData.substr(0, vueFileData.indexOf(script)).split('\n').length + ex.lineNumber - 1;
throw new (ex.constructor)(ex.message, url, lineNumber);
}
return Promise.resolve(this.module.exports)
.then(httpVueLoader.scriptExportsHandler.bind(this))
.then(function(exports) {
this.module.exports = exports;
}.bind(this));
}
};
function ScriptContext(component, elt) {
this.component = component;
this.elt = elt;
this.module = { exports:{} };
}
TemplateContext.prototype = {
getContent: function() {
return this.elt.innerHTML;
},
setContent: function(content) {
this.elt.innerHTML = content;
},
getRootElt: function() {
var tplElt = this.elt.content || this.elt;
if ( 'firstElementChild' in tplElt )
return tplElt.firstElementChild;
for ( tplElt = tplElt.firstChild; tplElt !== null; tplElt = tplElt.nextSibling )
if ( tplElt.nodeType === Node.ELEMENT_NODE )
return tplElt;
return null;
},
compile: function() {
return Promise.resolve();
}
};
function TemplateContext(component, elt) {
this.component = component;
this.elt = elt;
}
Component.prototype = {
getHead: function() {
return document.head || document.getElementsByTagName('head')[0];
},
getScopeId: function() {
if ( this._scopeId === '' ) {
this._scopeId = 'data-s-' + (scopeIndex++).toString(36);
this.template.getRootElt().setAttribute(this._scopeId, '');
}
return this._scopeId;
},
load: function(componentURL) {
return httpVueLoader.httpRequest(componentURL)
.then(function(responseText) {
this.baseURI = componentURL.substr(0, componentURL.lastIndexOf('/')+1);
var doc = document.implementation.createHTMLDocument('');
// IE requires the <base> to come with <style>
doc.body.innerHTML = (this.baseURI ? '<base href="'+this.baseURI+'" rel="external nofollow" >' : '') + responseText;
for ( var it = doc.body.firstChild; it; it = it.nextSibling ) {
switch ( it.nodeName ) {
case 'TEMPLATE':
this.template = new TemplateContext(this, it);
break;
case 'SCRIPT':
this.script = new ScriptContext(this, it);
break;
case 'STYLE':
this.styles.push(new StyleContext(this, it));
break;
}
}
return this;
}.bind(this));
},
_normalizeSection: function(eltCx) {
var p;
if ( eltCx === null || !eltCx.elt.hasAttribute('src') ) {
p = Promise.resolve(null);
} else {
p = httpVueLoader.httpRequest(eltCx.elt.getAttribute('src'))
.then(function(content) {
eltCx.elt.removeAttribute('src');
return content;
});
}
return p
.then(function(content) {
if ( eltCx !== null && eltCx.elt.hasAttribute('lang') ) {
var lang = eltCx.elt.getAttribute('lang');
eltCx.elt.removeAttribute('lang');
return httpVueLoader.langProcessor[lang.toLowerCase()].call(this, content === null ? eltCx.getContent() : content);
}
return content;
}.bind(this))
.then(function(content) {
if ( content !== null )
eltCx.setContent(content);
});
},
normalize: function() {
return Promise.all(Array.prototype.concat(
this._normalizeSection(this.template),
this._normalizeSection(this.script),
this.styles.map(this._normalizeSection)
))
.then(function() {
return this;
}.bind(this));
},
compile: function() {
return Promise.all(Array.prototype.concat(
this.template && this.template.compile(),
this.script && this.script.compile(),
this.styles.map(function(style) { return style.compile(); })
))
.then(function() {
return this;
}.bind(this));
}
};
function Component(name) {
this.name = name;
this.template = null;
this.script = null;
this.styles = [];
this._scopeId = '';
}
function identity(value) {
return value;
}
function parseComponentURL(url) {
var comp = url.match(/(.*?)([^/]+?)\/?(\.vue)?(\?.*|#.*|$)/);
return {
name: comp[2],
url: comp[1] + comp[2] + (comp[3] === undefined ? '/index.vue' : comp[3]) + comp[4]
};
}
function resolveURL(baseURL, url) {
if (url.substr(0, 2) === './' || url.substr(0, 3) === '../') {
return baseURL + url;
}
return url;
}
httpVueLoader.load = function(url, name) {
return function() {
return new Component(name).load(url)
.then(function(component) {
return component.normalize();
})
.then(function(component) {
return component.compile();
})
.then(function(component) {
var exports = component.script !== null ? component.script.module.exports : {};
if ( component.template !== null )
exports.template = component.template.getContent();
if ( exports.name === undefined )
if ( component.name !== undefined )
exports.name = component.name;
exports._baseURI = component.baseURI;
return exports;
});
};
};
httpVueLoader.register = function(Vue, url) {
var comp = parseComponentURL(url);
Vue.component(comp.name, httpVueLoader.load(comp.url));
};
httpVueLoader.install = function(Vue) {
Vue.mixin({
beforeCreate: function () {
var components = this.$options.components;
for ( var componentName in components ) {
if ( typeof(components[componentName]) === 'string' && components[componentName].substr(0, 4) === 'url:' ) {
var comp = parseComponentURL(components[componentName].substr(4));
var componentURL = ('_baseURI' in this.$options) ? resolveURL(this.$options._baseURI, comp.url) : comp.url;
if ( isNaN(componentName) )
components[componentName] = httpVueLoader.load(componentURL, componentName);
else
components[componentName] = Vue.component(comp.name, httpVueLoader.load(componentURL, comp.name));
}
}
}
});
};
httpVueLoader.require = function(moduleName) {
return window[moduleName];
};
httpVueLoader.httpRequest = function(url) {
return new Promise(function(resolve, reject) {
var xhr = new XMLHttpRequest();
xhr.open('GET', url);
xhr.responseType = 'text';
xhr.onreadystatechange = function() {
if ( xhr.readyState === 4 ) {
if ( xhr.status >= 200 && xhr.status < 300 )
resolve(xhr.responseText);
else
reject(xhr.status);
}
};
xhr.send(null);
});
};
httpVueLoader.langProcessor = {
html: identity,
js: identity,
css: identity
};
httpVueLoader.scriptExportsHandler = identity;
function httpVueLoader(url, name) {
var comp = parseComponentURL(url);
return httpVueLoader.load(comp.url, name);
}
return httpVueLoader;
});
總結
以上為個人經驗，希望能給大傢一個參考，也希望大傢多多支持WalkonNet。