國開電大 JavaScript程序設(shè)計(jì) 實(shí)訓(xùn)八：使用jQuery技術(shù)實(shí)現(xiàn)企業(yè)信息展示系統(tǒng)的相關(guān)功能

L題目使用jQuery技術(shù)實(shí)現(xiàn)企業(yè)信息展示系統(tǒng)的相關(guān)功能。2目的(1)掌握jQuery的基本知識。(2)掌握jQuery的應(yīng)用方法。(3)進(jìn)一步理解Ajax程序的設(shè)計(jì)方法。(4)會利用所學(xué)知識設(shè)計(jì)簡單的應(yīng)用程序。3.內(nèi)容用jQuery技術(shù)實(shí)現(xiàn)產(chǎn)品的查詢、添加、修改與刪除，用戶的登錄、注冊、查詢和刪除。4.要求(1)從下載jQuery庫。(2)將在客戶端網(wǎng)頁中使用的MyTools中的函數(shù)轉(zhuǎn)換為jQuery函數(shù)。(3)進(jìn)一步完善功能，優(yōu)化界面。代碼示例:classJq{constructorfarg,root){〃記錄上次操作的節(jié)點(diǎn)；if(typeofroot=='undefined'){this.prevObject=newJq(document,null);)if(root){this.prevObject=root;)if(typeofarg=="string"){〃字符串leteles=document.querySelectorAII(arg);this.addEvent(eles);}elseif(typeofarg=="function"){window.addEventListener("DOMContentLoaded'\arg);}else{〃原生節(jié)點(diǎn)；if(typeofarg.length=="undefined"){this[0]=arg;this.length=1;}else{this.addEvent(arg);)))addEvent(eles){eles.forEach((el,index)=>{this[index]=el;})this.length=eles.length;)eq(index){returnnewJq(this[index],this);)end(){returnthis.prevObject;)click(fn){for(leti=0;i<this.length;i++){thisIiJ.addEventListenerC'click",fn);))on(eventName,fn){letreg=/\s+/g;eventName=eventName.replace(reg,"");〃console.log(eventName);leteventArr=eventName.split("")；for(leti=0;i<eventArr.length;i++){for(letj=0;j<this.length;j++){this[j].addEventListener(eventArr[i],fn);)))css(...arg){if(arg.length>1){if(arg[O]in$.cssHooks){letitem=arg[0];for(leti=0;i<this.length;i++){$.cssHooks(item].set(this[i]/arg[l]);)}else{//2個(gè)參數(shù)〃設(shè)置樣式for(leti=0;i<this.length;i++){this.setStyle(this[i],arg[0]zarg[l]);))}else{〃:l個(gè)參數(shù)：-》字符串、對象；[obj]if(typeofarg[0]=='string'){if(arg[0]=="wh"&&arg[0]in$.cssHooks){return$.cssHooks[arg[0]].get(this[0]);}else{〃字符串：獲取樣式returnthis.getStyle(this(O],arg(0]);)}else{〃對象；設(shè)置樣式for(leti=0;i<this.length;i++){for(letjinarg[0]){this.setStyle(this[i],j,arg[O][j]);))}))setStyle(ele,styleName,styleValue){if(typeofstyleValue=="number"&&!(styleNamein$.cssNumber)){styleValue=styleValue+"px";)ele.style[styleName]=styleValue;)getStyle(ele,styleName){returnwindow.getComputedStyle(ele,null)[styleName];)}function$(arg){returnnewJq(arg);)$.cssNumber={animationlterationCount:true,columnCount:true,fillOpacity:true,flexGrow:true,flexShrink:true,fontweight:true,gridArea:true,gridColumn:true,gridColumnEnd:true,gridColumnStart:true,gridRow:true,gridRowEnd:true,gridRowStart:true,