我是歌谣 闲来无事做 就不如写写代码
本次不过多对原生的操作进行说法
我们直接上代码
效果图
有一个index.html的文件
<!DOCTYPE html>
<html lang="en">
<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"><title>Document</title><style>#my-tab {width: 500px;height: 500px;border: 1px solid #000;margin: 50px auto;}.tab-wrapper {height: 50px;border-bottom: 1px solid #000;}.tab-item {float: left;width: 33.33%;height: 50px;text-align: center;line-height: 50px;}.tab-item.current {background-color: #000;color: #fff;}.page-wrapper {position: relative;height: 450px;}.page-item {display: none;position: absolute;top: 0;left: 0;width: 100%;height: 450px;text-align: center;line-height: 450px;}.page-item.current {display: block;}
</style>
</head>
<body><div id="my-tab" data='[{"tab": "选项1","page": "页面1"},{"tab": "选项2","page": "页面2"},{"tab": "选项3","page": "页面3"}]'><!-- <div>...tab按钮</div><div>...页面</div> --></div><script src="js/utils.js"></script><script src="js/tpl.js"></script><script src="js/myTab.js"></script><script>new MyTab('#my-tab');
</script>
</body>
</html>index.js这个类
(function test (a, b, c, d) {// 1. 可以创建一个与外界没有任何关联的作用域，独立作用域// 2. 执行完成以后，自动销毁// 3. ES3 ES5 立场上是没有模块概念，立即执行函数来模拟模块化// 封闭作用域、抛出接口// 向外部抛出一系列属性和方法// window上保存属性和方法console.log(test);console.log(test.length);console.log(arguments.length);console.log('Hello');
})(1,2,3);MyTab.js
(function (doc, tpl, tools) {function MyTab (el) {this.el = doc.querySelector(el);this.data = JSON.parse(this.el.getAttribute('data'));this._index = 0;this.init();}MyTab.prototype.init = function () {this._render();this._bindEvent();}MyTab.prototype._render = function () {var tabWrapper = doc.createElement('div');var pageWrapper = doc.createElement('div');var oFrag = doc.createDocumentFragment();tabWrapper.className = 'tab-wrapper';pageWrapper.className = 'page-wrapper';this.data.forEach(function (item, index) {tabWrapper.innerHTML += tools.tplReplace(tpl.tab('tab'), {tab: item.tab,current: !index ? 'current' : ''});pageWrapper.innerHTML += tools.tplReplace(tpl.tab('page'), {page: item.page,current: !index ? 'current' : ''});});oFrag.appendChild(tabWrapper);oFrag.appendChild(pageWrapper);this.el.appendChild(oFrag);}MyTab.prototype._bindEvent = function () {var doms = {oTabItems: doc.querySelectorAll('.tab-item'),oPageItems: doc.querySelectorAll('.page-item')}this.el.addEventListener('click', this._handleTabClick.bind(this, doms), false);}MyTab.prototype._handleTabClick = function () {var _doms = arguments[0],tar = arguments[1].target,className = tar.className.trim();if (className === 'tab-item') {_doms.oTabItems[this._index].className = 'tab-item';_doms.oPageItems[this._index].className = 'page-item';this._index = [].indexOf.call(_doms.oTabItems, tar);tar.className += ' current';_doms.oPageItems[this._index].className += ' current';}}window.MyTab = MyTab;
})(document, tpl, tools);tql.js
var tpl = (function () {function tab (field) {switch (field) {case 'tab':return (`<div class="tab-item {{ current }}">{{ tab }}</div>`);case 'page':return (`<div class="page-item {{ current }}">{{ page }}</div>`);default:break;}}return {tab: tab}
})();util.js
var tools = (function () {function tplReplace (tpl, replaceObj) {return tpl.replace(/\{\{(.*?)\}\}/g, function (node, key) {return replaceObj[key.trim()];})}return {tplReplace: tplReplace}
})();
