5选项卡(封装插件版)加事件委托版选项卡
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5选项卡(封装插件版)加事件委托版选项卡
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HTML代碼(兩款HTML選項卡代碼)：
第一款：非事件委托版HTML代碼：
<!DOCTYPE html> <html> <head><meta charset="UTF-8"><title>非事件委托</title><style type="text/css">* {margin: 0;padding: 0;color: #424242;font-size: 14px;}ul, li {list-style: none;}.tabBox {margin: 10px auto;width: 600px;overflow: hidden;}.tabBox ul {position: relative;top: 1px;overflow: hidden;}.tabBox ul li {/*float: left;*/display: inline-block;margin-right: 10px;width: 80px;height: 30px;line-height: 30px;text-align: center;cursor: pointer;border: 1px solid green;}.tabBox ul li.bg {background: lightblue;border-bottom-color: lightblue;}.tabBox div {display: none;height: 100px;line-height: 100px;text-align: center;border: 1px solid green;background: lightblue;}.tabBox div.bg {display: block;}</style> </head> <body> <div class="tabBox"><ul><li class="bg">1</li><li>2</li><li>3</li><li>4</li><li>5</li></ul><div class="bg">1</div><div>2</div><div>3</div><div>4</div><div>5</div> </div><div class="tabBox"><ul><li class="bg">1</li><li>2</li><li>3</li><li>4</li><li>5</li></ul><div class="bg">1</div><div>2</div><div>3</div><div>4</div><div>5</div> </div><script charset="UTF-8" type="text/javascript" src="js/utils.min.js"></script> <script type="text/javascript">var allTabBox = utils.getElementsByClass("tabBox");for(var i = 0; i<allTabBox.length;i++){tabChange(allTabBox[i]);}//->選項卡切換的操作封裝成插件function tabChange(tabBox){//var tabBox = document.getElementById("curId");var tabBoxUl = utils.firstChild(tabBox);//->第一個ulvar oLis = utils.children(tabBoxUl, "li");//->第一個ul所有子元素的livar divList = utils.children(tabBox, "div");//->所有容器子元素中的divfor (var i = 0; i < oLis.length; i++) {var curLi = oLis[i];curLi.index = i;curLi.onclick = function () {//-> utils.addClass(this, "bg");var curLiSibling = utils.siblings(this);//當(dāng)前l(fā)i的所有兄弟for (var k = 0; k < curLiSibling.length; k++) {utils.removeClass(curLiSibling[k], "bg");//兄弟的都移除掉 }//->for (k = 0; k < divList.length; k++) {k === this.index ? utils.addClass(divList[k], "bg") : utils.removeClass(divList[k], "bg");}};}} </script> </body> </html>第二款：事件委托版HTML代碼：
<!DOCTYPE html> <html> <head><meta charset="UTF-8"><title>事件委托/事件代理</title><style type="text/css">* {margin: 0;padding: 0;color: #424242;font-size: 14px;}ul, li {list-style: none;}.tabBox {margin: 10px auto;width: 600px;overflow: hidden;}.tabBox ul {position: relative;top: 1px;overflow: hidden;}.tabBox ul li {/*float: left;*/display: inline-block;margin-right: 10px;width: 80px;height: 30px;line-height: 30px;text-align: center;cursor: pointer;border: 1px solid green;}.tabBox ul li.bg {background: lightblue;border-bottom-color: lightblue;}.tabBox div {display: none;height: 100px;line-height: 100px;text-align: center;border: 1px solid green;background: lightblue;}.tabBox div.bg {display: block;}</style> </head> <body> <div class="tabBox"><ul zhufengFlag="firUl"><li class="bg">1</li><li>2</li><li>3</li><li>4</li><li>5</li></ul><div class="bg">1</div><div>2</div><div>3</div><div>4</div><div>5</div> </div><div class="tabBox"><ul zhufengFlag="firUl"><li class="bg">1</li><li>2</li><li>3</li><li>4</li><li>5</li></ul><div class="bg">1</div><div>2</div><div>3</div><div>4</div><div>5</div> </div><script charset="UTF-8" type="text/javascript" src="js/utils.min.js"></script> <script type="text/javascript">//1、事件委托//->利用了事件的冒泡傳播機(jī)制，如果一個容器A中有很多的后代元素需要綁定點(diǎn)擊事件(其他行為統(tǒng)同樣可以)，這樣的話我就不需要一個個獲取綁定了，只需要給最外層的容器A綁定一個點(diǎn)擊事件即可，這樣不管里面那個元素觸發(fā)了點(diǎn)擊的行為，A點(diǎn)擊行為對應(yīng)的方法都會執(zhí)行，我們在這里通過判斷事件源是誰來實(shí)現(xiàn)不同的操作即可var allTabBox = utils.getElementsByClass("tabBox");for (var i = 0; i < allTabBox.length; i++) {allTabBox[i].onclick = function (e) {e = e || window.event;var curTar = e.target || e.srcElement;//->通過條件確定我們點(diǎn)擊的是頁卡區(qū)域的LIif (curTar.tagName.toUpperCase() === "LI" && curTar.parentNode.getAttribute("zhufengFlag") === "firUl") {//->讓當(dāng)前點(diǎn)擊的這個LI有選中的樣式,而其兄弟元素都移除選中樣式 utils.addClass(curTar, "bg");//當(dāng)前事件源var curLiSibling = utils.siblings(curTar);for (var k = 0; k < curLiSibling.length; k++) {utils.removeClass(curLiSibling[k], "bg");}//->讓和當(dāng)前點(diǎn)擊LI索引對應(yīng)的那個DIV有選中的樣式,其余的DIV移除選中樣式var curTarIndex=utils.index(curTar);var divList=utils.nextAll(curTar.parentNode);//->父節(jié)點(diǎn)下所有的弟弟for (k = 0; k < divList.length; k++) {k === curTarIndex ? utils.addClass(divList[k], "bg") : utils.removeClass(divList[k], "bg");}}};} </script> </body> </html>util.js加密后的JS代碼：
var utils=function(){function listToArray(a){var b,c;if(flag)return Array.prototype.slice.call(a,0);for(b=[],c=0;c<a.length;c++)b[b.length]=a[c];return b}function formatJSON(jsonStr){return"JSON"in window?JSON.parse(jsonStr):eval("("+jsonStr+")")}function offset(a){for(var b=a.offsetLeft,c=a.offsetTop,d=a.offsetParent;d;)-1===navigator.userAgent.indexOf("MSIE 8")&&(b+=d.clientLeft,c+=d.clientTop),b+=d.offsetLeft,c+=d.offsetTop,d=d.offsetParent;return{left:b,top:c}}function win(a,b){return"undefined"==typeof b?document.documentElement[a]||document.body[a]:(document.documentElement[a]=b,document.body[a]=b,void 0)}function children(a,b){var d,e,f,g,h,i,c=[];if(flag)c=this.listToArray(a.children);else{for(d=a.childNodes,e=0,f=d.length;f>e;e++)g=d[e],1===g.nodeType?c[c.length]=g:null;d=null}if("string"==typeof b)for(h=0;h<c.length;h++)i=c[h],i.nodeName.toLowerCase()!==b.toLowerCase()&&(c.splice(h,1),h--);return c}function prev(a){if(flag)return a.previousElementSibling;for(var b=a.previousSibling;b&&1!==b.nodeType;)b=b.previousSibling;return b}function next(a){if(flag)return a.nextElementSibling;for(var b=a.nextSibling;b&&1!==b.nodeType;)b=b.nextSibling;return b}function prevAll(a){for(var b=[],c=this.prev(a);c;)b.unshift(c),c=this.prev(c);return b}function nextAll(a){for(var b=[],c=this.next(a);c;)b.push(c),c=this.next(c);return b}function sibling(a){var b=this.prev(a),c=this.next(a),d=[];return b?d.push(b):null,c?d.push(c):null,d}function siblings(a){return this.prevAll(a).concat(this.nextAll(a))}function index(a){return this.prevAll(a).length}function firstChild(a){var b=this.children(a);return b.length>0?b[0]:null}function lastChild(a){var b=this.children(a);return b.length>0?b[b.length-1]:null}function append(a,b){b.appendChild(a)}function prepend(a,b){var c=this.firstChild(b);return c?(b.insertBefore(a,c),void 0):(b.appendChild(a),void 0)}function insertBefore(a,b){b.parentNode.insertBefore(a,b)}function insertAfter(a,b){var c=this.next(b);return c?(b.parentNode.insertBefore(a,c),void 0):(b.parentNode.appendChild(a),void 0)}function hasClass(a,b){var c=new RegExp("(^| +)"+b+"( +|$)");return c.test(a.className)}function addClass(a,b){var d,e,f,c=b.replace(/(^ +| +$)/g,"").split(/ +/g);for(d=0,e=c.length;e>d;d++)f=c[d],this.hasClass(a,f)||(a.className+=" "+f)}function removeClass(a,b){var d,e,f,g,c=b.replace(/(^ +| +$)/g,"").split(/ +/g);for(d=0,e=c.length;e>d;d++)f=c[d],this.hasClass(a,f)&&(g=new RegExp("(^| +)"+f+"( +|$)","g"),a.className=a.className.replace(g," "))}function getElementsByClass(a,b){var c,d,e,f,g,h,i,j,k;if(b=b||document,flag)return this.listToArray(b.getElementsByClassName(a));for(c=[],d=a.replace(/(^ +| +$)/g,"").split(/ +/g),e=b.getElementsByTagName("*"),f=0,g=e.length;g>f;f++){for(h=e[f],i=!0,j=0;j<d.length;j++)if(k=new RegExp("(^| +)"+d[j]+"( +|$)"),!k.test(h.className)){i=!1;break}i&&(c[c.length]=h)}return c}function getCss(a){var b=null,c=null;return flag?b=window.getComputedStyle(this,null)[a]:"opacity"===a?(b=this.currentStyle["filter"],c=/^alpha\(opacity=(\d+(?:\.\d+)?)\)$/,b=c.test(b)?c.exec(b)[1]/100:1):b=this.currentStyle[a],c=/^(-?\d+(\.\d+)?)(px|pt|em|rem)?$/,c.test(b)?parseFloat(b):b}function setCss(a,b){if("float"===a)return this["style"]["cssFloat"]=b,this["style"]["styleFloat"]=b,void 0;if("opacity"===a)return this["style"]["opacity"]=b,this["style"]["filter"]="alpha(opacity="+100*b+")",void 0;var c=/^(width|height|top|bottom|left|right|((margin|padding)(Top|Bottom|Left|Right)?))$/;c.test(a)&&(isNaN(b)||(b+="px")),this["style"][a]=b}function setGroupCss(a){for(var b in a)a.hasOwnProperty(b)&&setCss.call(this,b,a[b])}function css(a){var b=arguments[1],c=Array.prototype.slice.call(arguments,1);if("string"==typeof b){if("undefined"==typeof arguments[2])return getCss.apply(a,c);setCss.apply(a,c)}b=b||0,"[object Object]"===b.toString()&&setGroupCss.apply(a,c)}var flag="getComputedStyle"in window;return{win:win,offset:offset,listToArray:listToArray,formatJSON:formatJSON,children:children,prev:prev,next:next,prevAll:prevAll,nextAll:nextAll,sibling:sibling,siblings:siblings,index:index,firstChild:firstChild,lastChild:lastChild,append:append,prepend:prepend,insertBefore:insertBefore,insertAfter:insertAfter,hasClass:hasClass,addClass:addClass,removeClass:removeClass,getElementsByClass:getElementsByClass,css:css}}();?
轉(zhuǎn)載于:https://www.cnblogs.com/kpengfang/p/5447319.html
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