首页 web前端 js教程 JS代码格式化和语法着色V2_javascript技巧

JS代码格式化和语法着色V2_javascript技巧

May 16, 2016 pm 07:25 PM

升级到第二版,开一贴以示庆贺,哈哈哈

自 Ver1.1 升级内容
1. 增加函数列表
2. 增加函数 Export 功能
3. 增加函数依存关系分析 (这个功能个人未见其他软件实现过,自己创意,问题多多,目前分析能力还是比较有限的,只能分析全局函数依存关系,可能在复杂代码的情况下出现 bug)
4. 修正 for 语句分析 bug
5. 修正 语法折叠的 bug
6. 改进 Collapse All ※ Expand All 函数工作方式,避免行数太大时的死机
7. 改进行号分析机制,避免行数太大时的死机

复制代码 代码如下:



JSer Ver 2.0


<script> <BR>/********************** <BR> Author: Hutia <br><br>*********************/ <br><br>window.onload=init; <br><br><BR>//------------------ <BR>// Static Variable <BR>//------------------ <br><br>var KEYWORDS="abstract break byte case catch char class const continue default delete do double else extends false final <BR>finally float for function goto if implements import in instanceof int interface long native null package private protected <BR>public reset return short static super switch synchronized this throw transient true try var void while with"; <BR>var OBJECTS="Anchor Applet Area Arguments Array Boolean Button Checkbox Collection Crypto Date Dictionary Document Drive <BR>Drives Element Enumerator Event File FileObject FileSystemObject FileUpload Folder Folders Form Frame Function Global Hidden <BR>History HTMLElement Image Infinity Input JavaArray JavaClass JavaObject JavaPackage JSObject Layer Link Math MimeType <BR>Navigator Number Object Option Packages Password Plugin PrivilegeManager Random RegExp Screen Select String Submit Text <BR>Textarea URL VBArray Window WScript"; <BR>var METHODS_PROPERTIES="above abs acos action activeElement alert alinkColor all altKey anchor anchors appCodeName applets <BR>apply appName appVersion arguments arity asin assign atan atan2 atob availHeight availLeft availTop availWidth ActiveXObject <BR>back background below bgColor big blink blur bold border borderWidths bottom btoa button call callee caller cancelBubble <BR>captureEvents ceil charAt charCodeAt charset checked children classes className clear clearInterval clearTimeout click <BR>clientInformation clientX clientY close closed colorDepth compile complete concat confirm constructir contains contextual <BR>cookie cos crypto ctrlKey current data defaultCharset defaultChecked defaultSelected defaultStatus defaultValue description <BR>disableExternalCapture disablePrivilege document domain E Echo element elements embeds enabledPlugin enableExternalCapture <BR>enablePrivilege encoding escape eval event exec exp expando FromPoint fgColor fileName find fixed floor focus fontColor <BR>fontSize form forms forward frames fromCharCode fromElement getAttribute get getClass getDate getDay getFullYear getHours <BR>getMember getMilliseconds getMinutes getMonth getSeconds getSelection getSlot getTime getTimezoneOffset getUTCDate getUTCDay <BR>getUTCFullYear getUTCHours getUTCMilliseconds getUTCMinutes getUTCMonth getUTCSeconds getWindow getYear global go HandleEvent <BR>Height hash hidden history home host hostName href hspace id ids ignoreCase images index indexOf inner innerHTML innerText <BR>innerWidth insertAdjacentHTML insertAdjacentText isFinite isNAN italics java javaEnabled join keyCode Links LN10 LN2 LOG10E <BR>LOG2E lang language lastIndex lastIndexOf lastMatch lastModified lastParen layers layerX layerY left leftContext length link <BR>linkColor load location locationBar log lowsrc MAX_VALUE MIN_VALUE margins match max menubar method mimeTypes min modifiers <BR>moveAbove moveBelow moveBy moveTo moveToAbsolute multiline NaN NEGATIVE_INFINITY name navigate navigator netscape next <BR>number offscreenBuffering offset offsetHeight offsetLeft offsetParent offsetTop offsetWidth offsetX offsetY onabort onblur <BR>onchange onclick ondblclick ondragdrop onerror onfocus onHelp onkeydown onkeypress onkeyup onload onmousedown onmousemove <BR>onmouseout onmouseover onmouseup onmove onreset onresize onsubmit onunload open opener options outerHeight outerHTML <BR>outerText outerWidth POSITIVE_INFINITY PI paddings pageX pageXOffset pageY pageYOffset parent parentElement parentLayer <BR>parentWindow parse parseFloat parseInt pathname personalbar pixelDepth platform plugins pop port pow preference previous <BR>print prompt protocol prototype push random readyState reason referrer refresh releaseEvents reload removeAttribute <BR>removeMember replace resizeBy resizeTo returnValue reverse right rightcontext round SQRT1_2 SQRT2 screenX screenY scroll <BR>scrollbars scrollBy scrollIntoView scrollTo search select selected selectedIndex self setAttribute setDay setFullYear <BR>setHotkeys setHours setInterval setMember setMilliseconds setMinutes setMonth setResizable setSeconds setSlot setTime <BR>setTimeout setUTCDate setUTCFullYear setUTCHours setUTCMillseconds setUTCMinutes setUTCMonth setUTCSeconds setYear <BR>setZOptions shift shiftKey siblingAbove siblingBelow signText sin slice smallsort source sourceIndex splice split sqrt src <BR>srcElement srcFilter status statusbar stop strike style sub submit substr substring suffixes sun sup systemLanguage TYPE <BR>tagName tags taint taintEnabled tan target test text title toElement toGMTString toLocaleString toLowerCase toolbar top <BR>toString toUpperCase toUTCString type typeOf UTC unescape unshift untaint unwatch userAgent userLanguage value valueOf <BR>visibility vlinkColor vspace watch which width window write writeln x y zIndex"; <BR>var OPS="! $ % & * + - // / : < = > ? [ ] ^ | ~ is new sizeof typeof unchecked"; <br><br>var regKW=new RegExp("(\\W"+KEYWORDS.replace(/ /g,"$)|(\\W")+"$)","g"); <BR>var regObj=new RegExp("(\\W"+OBJECTS.replace(/ /g,"$)|(\\W")+"$)","g"); <BR>var regMP=new RegExp("(\\W"+METHODS_PROPERTIES.replace(/ /g,"$)|(\\W")+"$)","g"); <BR>//var regOP=new RegExp("(\\W"+OPS.replace(/ /g,"$)|(\\W")+"$)","g"); <br><br>//------------------ <BR>// Global Variables <BR>//------------------ <BR>var divJSInput, txtJSInput, divMain, divJSOutputLineNo, divJSOutputPlus, divJSOutput, divWaiting; <BR>var spnProcess, cmdStop, divJSExport, selJSExport, divJSExportContent; <BR>var glbStr, glbP, glbRe, curRe, glbTimer, glbBusy, glbFuntionNames; <br><br><BR>function init(){ <BR> // init global variables <BR> divJSInput=document.getElementById("divJSInput"); <BR> txtJSInput=document.getElementById("txtJSInput"); <BR> divMain=document.getElementById("divMain"); <BR> divJSOutputLineNo=document.getElementById("divJSOutputLineNo"); <BR> divJSOutputPlus=document.getElementById("divJSOutputPlus"); <BR> divJSOutput=document.getElementById("divJSOutput"); <BR> divWaiting=document.getElementById("divWaiting"); <BR> spnProcess=document.getElementById("spnProcess"); <BR> cmdStop=document.getElementById("cmdStop"); <BR> divJSExport=document.getElementById("divJSExport"); <BR> selJSExport=document.getElementById("selJSExport"); <BR> divJSExportContent=document.getElementById("divJSExportContent"); <br><br> // init window state <BR> maximizeWindow(); <br><br> divMain.style.width=document.body.clientWidth-4; <BR> divMain.style.height=document.body.clientHeight-26; <br><br> divJSOutput.style.width=document.body.clientWidth-72; <br><br> <BR> // init global events <br><br>divJSOutputLineNo.onselectstart=divJSOutputLineNo.onselect=divJSOutputPlus.onselectstart=divJSOutputPlus.onselect=cancelEvent <br><br> divJSOutput.onscroll=divJSOutput_onscroll; <br><br> divJSInput.onkeydown=divJSInput_keydown; <BR> divJSExport.onkeydown=divJSExport_keydown; <br><br>} <br><br><BR>//------------------ <BR>// event scripts <BR>//------------------ <br><br>function cancelEvents(e){ <BR> var e=window.event?window.event:e; <BR> e.returnValue=false; <BR> return(false); <BR>} <br><br>function divJSInput_keydown(e){ <BR> var e=window.event?window.event:e; <BR> var srcEle=e.srcElement?e.srcElement:e.target; <BR> var sel; <BR> if(e.keyCode==27)hideJSInput(); <BR> if(e.keyCode==13&&e.ctrlKey)execJSInput(); <BR> if(e.keyCode==9&&srcEle==txtJSInput){ <BR> document.selection.createRange().text="\t";return(false); // not support FF <BR> } <BR>} <br><br>function divJSExport_keydown(e){ <BR> var e=window.event?window.event:e; <BR> var srcEle=e.srcElement?e.srcElement:e.target; <BR> var sel; <BR> if(e.keyCode==27)hideJSExport(); <BR> if(e.keyCode==13&&e.ctrlKey)hideJSExport(); <BR>} <br><br>function divJSOutput_onscroll(){ <BR> divJSOutputLineNo.scrollTop=divJSOutputPlus.scrollTop=divJSOutput.scrollTop; <BR>} <br><br><br><br>//------------------ <BR>// functional scripts <BR>//------------------ <br><br>function showJSInput(){ <BR> if(glbBusy)return; <BR> hideJSExport(); <BR> with(divJSInput.style){ <BR> display="block"; <BR> left=(document.body.clientWidth-divJSInput.offsetWidth)/2; <BR> top=(document.body.clientHeight-divJSInput.offsetHeight)/2; <BR> } <br><br> txtJSInput.focus(); <br><br> return(false); <BR>} <br><br>function showJSExport(){ <BR> if(glbBusy)return; <BR> hideJSInput(); <BR> with(divJSExport.style){ <BR> display="block"; <BR> left=(document.body.clientWidth-divJSExport.offsetWidth)/2; <BR> top=(document.body.clientHeight-divJSExport.offsetHeight)/2; <BR> } <BR> divJSExportContent.style.display="none"; <BR> selJSExport.style.display="block"; <br><br> selJSExport.focus(); <BR> return(false); <BR>} <br><br>function hideJSInput(){ <BR> divJSInput.style.display="none"; <BR>} <br><br>function hideJSExport(){ <BR> divJSExport.style.display="none"; <BR>} <br><br>function execJSInput(){ <BR> hideJSInput(); <br><br> divJSOutput.innerHTML=""; <BR> divJSOutputLineNo.innerHTML=""; <BR> divJSOutputPlus.innerHTML=""; <br><br> glbStr=txtJSInput.innerText; // not support FF <BR> glbP=0; <BR> glbFuntionNames=new Array(); <BR> curRe=glbRe=document.createElement("div"); <br><br> divJSOutput.appendChild(glbRe); <BR> glbRe.className="codeRoot"; <br><br> while(selJSExport.options.length>0)selJSExport.options[0]=null; <br><br> showWait(startRecalcLine); <BR> core_analysis(); <BR>} <br><br>function execJSExport(){ <BR> var fns=new Array(), fcs=new Array(), str; <br><br> for(var i=0; i<selJSExport.options.length; i++){ <BR> if(selJSExport.options[i].selected){ <BR> fns.push(selJSExport.options[i].value); <BR> str=selJSExport.options[i].obj.outerHTML; <BR> try{ <BR> str+=selJSExport.options[i].obj.nextSibling.outerHTML; <BR> str+=selJSExport.options[i].obj.nextSibling.nextSibling.outerHTML; <BR> }catch(e){} <BR> fcs.push(str); <BR> } <BR> } <BR> if(fns.length==0)return; <br><br> divJSExportContent.style.display="block"; <BR> selJSExport.style.display="none"; <br><br> divJSExportContent.innerHTML=fcs.join("\r\n<br>\r\n"); <BR>} <br><br>function execJSExport_Dep(){ <BR> var fns=new Array(), fcs=new Array(), str, regFNs=new Array(), needDepthTest; <br><br> for(var i=0; i<selJSExport.options.length; i++){ <BR> if(selJSExport.options[i].selected){ <BR> fns.push(selJSExport.options[i].value); <BR> try{ <BR> str=selJSExport.options[i].obj.nextSibling.outerHTML; <BR> }catch(e){} <BR> fcs.push(str); <BR> } <BR> } <BR> if(fns.length==0)return; <br><br> divJSExportContent.style.display="none"; <BR> selJSExport.style.display="block"; <br><br> needDepthTest=false; <BR> for(var i=0;i<glbFuntionNames.length;i+=1){ <BR> if(!selJSExport.options[i].selected){ <BR> for(j=0;j<fcs.length;j++){ <BR> if(html2txt(fcs[j]).match(glbFuntionNames[i].replace(/\./g,"\\."))){ <BR> selJSExport.options[i].selected=true; <BR> needDepthTest=true; <BR> break; <BR> } <BR> } <BR> } <BR> } <BR> if(needDepthTest)execJSExport_Dep(); <BR>} <br><br><BR>function showWait(onstop){ <BR> glbBusy=true; <BR> document.body.style.cursor="wait"; <br><br> with(divWaiting.style){ <BR> display="block"; <BR> left=(document.body.clientWidth-divWaiting.offsetWidth)/2; <BR> top=(document.body.clientHeight-divWaiting.offsetHeight)/2; <BR> } <BR> spnProcess.innerHTML="0.00% ( 0 / 0 )"; <BR> divWaiting.onstop=onstop; <BR> cmdStop.focus(); <BR> return(false); <BR>} <br><br>function hideWait(){ <BR> glbBusy=false; <BR> document.body.style.cursor=""; <BR> divWaiting.style.display="none"; <BR> try{clearTimeout(glbTimer);}catch(e){} <BR> try{divWaiting.onstop();}catch(e){} <BR> return(false); <BR>} <br><br>function stopExec(){ hideWait(); } <br><br>function startRecalcLine(){ <BR> var re="", re2=""; <BR> if(glbBusy)return; <BR> glbBusy=true; <br><br> for(var i=0;i<parseInt(divJSOutput.scrollHeight/14+200);i++){ <BR> re+="<p>"+(i+1)+""; <BR> re2+="<p> "; <BR> } <br><br> divJSOutputLineNo.innerHTML=re; <BR> divJSOutputPlus.innerHTML=re2; <BR> divJSOutputPlus.buttons=new Array(); <br><br> glbP=0; <br><br> showWait(); <BR> recalcLine(); <BR> return(false); <br><br>} <br><br><BR>function recalcLine(){ <BR> var objs, j; <br><br> objs=document.getElementsByTagName("div"); <BR> for(var i=glbP;i<objs.length&&(i-glbP<30);i++){ <BR> if(objs[i].className=="indent"){ <BR> j=parseInt(objs[i].offsetTop/14)-1; <BR> divJSOutputPlus.childNodes[j].className="colsp"; <BR> divJSOutputPlus.childNodes[j].innerHTML="-"; <BR> divJSOutputPlus.childNodes[j].linkedDIV=objs[i]; <BR> divJSOutputPlus.childNodes[j].startIndex=j+1; <BR> divJSOutputPlus.childNodes[j].endIndex=j+Math.round(objs[i].offsetHeight/14); <BR> if(objs[i].innerHTML!="")divJSOutputPlus.childNodes[j].endIndex++; <BR> divJSOutputPlus.childNodes[j].switchDIV=divJSOutputPlus.childNodes[j].onclick=switchDIV; <BR> divJSOutputPlus.buttons.push(divJSOutputPlus.childNodes[j]); <BR> } <BR> } <BR> spnProcess.innerHTML=parseFloat(glbP/objs.length*100).toFixed(2)+"% ( "+glbP+" / "+objs.length+" )"; <BR> if(i<objs.length){glbP=i; glbTimer=setTimeout(recalcLine); return;} <BR> stopExec(); <BR> divJSOutput_onscroll(); <BR>} <br><br>function switchDIV(disp){ <BR> var y, obj; <BR> if((this.className=="colsp"||disp=="hide")&&disp!="show"){ <BR> this.className="colsp2"; <BR> this.innerHTML="+"; <BR> for(var i=this.startIndex;i<this.endIndex;i++){ <BR> divJSOutputLineNo.childNodes[i].style.display="none"; <BR> divJSOutputPlus.childNodes[i].style.display="none"; <BR> } <BR> this.linkedDIV.style.display="none"; <BR> }else{ <BR> this.className="colsp"; <BR> this.innerHTML="-"; <BR> this.linkedDIV.style.display="block"; <BR> for(var i=this.startIndex;i<this.endIndex;i++){ <BR> divJSOutputLineNo.childNodes[i].style.display="block"; <BR> divJSOutputPlus.childNodes[i].style.display="block"; <BR> if(divJSOutputPlus.childNodes[i].className=="colsp2"){ <BR> i=divJSOutputPlus.childNodes[i].endIndex-1; <BR> } <BR> } <BR> } <BR> divJSOutput_onscroll(); <BR>} <br><br>function collapseAll(index){ <BR> index=isNaN(parseInt(index))?0:parseInt(index); <BR> if(!divJSOutputPlus.buttons)return; <BR> if(index<0)index=0; <BR> if(index>divJSOutputPlus.buttons.length)return; <BR> for(var i=index;i<divJSOutputPlus.buttons.length&&i-index<10;i++)divJSOutputPlus.buttons[i].switchDIV("hide"); <BR> setTimeout("collapseAll("+i+")"); <BR>} <br><br>function expandAll(index){ <BR> index=isNaN(parseInt(index))?0:parseInt(index); <BR> if(!divJSOutputPlus.buttons)return; <BR> if(index<0)index=0; <BR> if(index>divJSOutputPlus.buttons.length)return; <BR> for(var i=index;i<divJSOutputPlus.buttons.length&&i-index<10;i++)divJSOutputPlus.buttons[i].switchDIV("show"); <BR> setTimeout("expandAll("+i+")"); <BR>} <br><br><BR>function core_analysis(){ <BR> var str=" ", c="", lastState="", seq, intNextQuote, intTemp, intCount, intWordStart; <BR> spnProcess.innerHTML=parseFloat(glbP/glbStr.length*100).toFixed(2)+"% ( "+glbP+" / "+glbStr.length+" )"; <BR> for(var i=glbP;i<glbStr.length;i++){ <BR> c=glbStr.charAt(i); <BR> str+=htmlEncode(c); <BR> switch(c){ <BR> case "\r": case " ": case "\t": <BR> if(lastState=="\r\n"){str=" ";break;} <BR> str=str.substring(0,str.length-htmlEncode(c).length); <BR> if(lastState=="blank")break; <BR> if(c.match(/\W/)&&glbStr.charAt(i-1).match(/\w/)){ <BR> str=str.replace(regKW,clKW).replace(regObj,clObj).replace(regMP,clMP); <BR> } <BR> str+=htmlEncode(c); <BR> lastState="blank"; <BR> break; <BR> case ";": <BR> if(str.match(/\Wfor.*?\(/i))break; <BR> // attention there's no break here <BR> case "\n": <BR> if(lastState=="\r\n"){str=" ";break;} <BR> outputLn(str); <BR> str=" "; <BR> lastState="\r\n"; <BR> if(i-glbP>200){ <BR> glbP=i+1; <BR> glbTimer=setTimeout(core_analysis); <BR> return; <BR> } <BR> break; <BR> case "\"": <BR> intNextQuote=i; <BR> while(intNextQuote!=-1&&intNextQuote<glbStr.length){ <BR> intNextQuote=glbStr.indexOf("\"",intNextQuote+1); <BR> if(intNextQuote==-1||glbStr.charAt(intNextQuote-1)!="\\")break; <BR> intCount=0; intTemp=intNextQuote; <BR> while(glbStr.charAt(--intTemp)=="\\")intCount++; <BR> if(intCount%2==0)break; <BR> } <BR> if(intNextQuote==-1)break; <BR> str+="<span class=\"quote\">"+htmlEncode(glbStr.substring(i+1,intNextQuote))+"<\/span>\""; <BR> i=intNextQuote; <BR> lastState=""; <BR> break; <BR> case "\'": <BR> intNextQuote=i; <BR> while(intNextQuote!=-1&&intNextQuote<glbStr.length){ <BR> intNextQuote=glbStr.indexOf("\'",intNextQuote+1); <BR> if(intNextQuote==-1||glbStr.charAt(intNextQuote-1)!="\\")break; <BR> intCount=0; intTemp=intNextQuote; <BR> while(glbStr.charAt(--intTemp)=="\\")intCount++; <BR> if(intCount%2==0)break; <BR> } <BR> if(intNextQuote==-1)break; <BR> str+="<span class=\"quote\">"+htmlEncode(glbStr.substring(i+1,intNextQuote))+"<\/span>\'"; <BR> i=intNextQuote; <BR> lastState=""; <BR> break; <BR> case "\/": <BR> if(glbStr.charAt(i+1)=="\/"){ <BR> intNextQuote=i; <BR> intNextQuote=glbStr.indexOf("\r\n",intNextQuote+1); <BR> if(intNextQuote==-1)intNextQuote=glbStr.length; <BR> str=str.substring(0,str.length-1); <BR> str+="<span class=\"comments\">\/"+htmlEncode(glbStr.substring(i+1,intNextQuote)) <BR>+"<\/span>"; <BR> i=intNextQuote; <BR> }else if(glbStr.charAt(i+1)=="*"){ <BR> intNextQuote=i; <BR> intNextQuote=glbStr.indexOf("*\/",intNextQuote+1); <BR> if(intNextQuote==-1)return; <BR> str=str.substring(0,str.length-1); <BR> str+="<span class=\"comments\">\/"+htmlEncode(glbStr.substring(i+1,intNextQuote)) <BR>+"*\/<\/span>"; <BR> i=intNextQuote+1; <BR> }else if(str.match(/[=(][ \t]*\//)){ <BR> intNextQuote=i; <BR> while(intNextQuote!=-1&&intNextQuote<glbStr.length){ <BR> intNextQuote=glbStr.indexOf("\/",intNextQuote+1); <BR> if(intNextQuote==-1||glbStr.charAt(intNextQuote-1)!="\\")break; <BR> intCount=0; intTemp=intNextQuote; <BR> while(glbStr.charAt(--intTemp)=="\\")intCount++; <BR> if(intCount%2==0)break; <BR> } <BR> if(intNextQuote==-1)break; <BR> str+="<span class=\"regexp\">"+htmlEncode(glbStr.substring(i+1,intNextQuote)) <BR>+"<\/span>\/"; <BR> i=intNextQuote; <BR> lastState=""; <BR> } <BR> lastState=""; <BR> break; <BR> case "{": <BR> outputLn(str); <BR> str=" "; <BR> seq=document.createElement("div"); <BR> seq.className="indent"; <BR> curRe.appendChild(seq); <BR> curRe=seq; <BR> lastState="\r\n"; <BR> if(i-glbP>200){ <BR> glbP=i+1; <BR> glbTimer=setTimeout(core_analysis); <BR> return; <BR> } <BR> break; <BR> case "}": <BR> outputLn(str.substring(0,str.length-1)); <BR> str="} "; <BR> lastState=""; <BR> curRe=curRe.parentNode; <BR> break; <BR> default: <BR> if(c.match(/\w/)&&glbStr.charAt(i-1).match(/\W/)){intWordStart=i;} <BR> if(c.match(/\W/)&&glbStr.charAt(i-1).match(/\w/)){ <BR> str=str.substring(0,str.length-htmlEncode(c).length); <BR> str=str.replace(regKW,clKW).replace(regObj,clObj).replace(regMP,clMP)+htmlEncode(c); <BR> } <BR> lastState=""; <BR> break; <BR> } <BR> } <br><br> if(i==glbStr.length){ <BR> if(str!=""){ outputLn(str); str=" "; } <BR> stopExec(); <BR> } <br><br>} <br><br>function outputLn(theStr){ <BR> var seq, txt, fn; <BR> if(html2txt(theStr).match(/^[ \t\r\n]*$/))return; <BR> seq=document.createElement("p"); <BR> seq.innerHTML=theStr; <BR> curRe.appendChild(seq); <br><br> txt=html2txt(theStr); <BR> if(!txt)return; <BR> fn=txt.match(/function[ \t\r\n]+([\.\w]+?)[ \t\r\n]*\(.*?\)[ \t\r\n]*\{/); <BR> if(fn){ <BR> glbFuntionNames.push(fn[1]); <BR> selJSExport.options[selJSExport.options.length]=new Option(fn[0]+"}",fn[1]); <BR> selJSExport.options[selJSExport.options.length-1].obj=seq; <BR> } <BR> fn=txt.match(/([\.\w]+?)[ \t\r\n]*=[ \t\r\n]*function\W*\(.*?\)[ \t\r\n]*\{/); <BR> if(fn){ <BR> glbFuntionNames.push(fn[1]); <BR> selJSExport.options[selJSExport.options.length]=new Option(fn[0]+"}",fn[1]); <BR> selJSExport.options[selJSExport.options.length-1].obj=seq; <BR> } <BR>} <br><br>function clKW(str){ return(str.charAt(0)+"<span class=\"keyWord\">"+str.substring(1)+""); } <br><br>function clObj(str){ return(str.charAt(0)+"<span class=\"object\">"+str.substring(1)+""); } <br><br>function clMP(str){ return(str.charAt(0)+"<span class=\"method_property\">"+str.substring(1)+""); } <br><br>function clOP(str){ return(str.charAt(0)+"<span class=\"operator\">"+str.substring(1)+""); } <br><br><BR>//------------------ <BR>// global scripts <BR>//------------------ <br><br>function maximizeWindow(){ <BR> window.moveTo(0,0); <BR> window.resizeTo(screen.availWidth,screen.availHeight); <BR>} <br><br>function htmlEncode(strS){ <BR> return(strS.replace(/&/g,"&").replace(/,"<").replace(/>/g,">").replace(/ /g," ").replace(/ <BR>\r\n/g,"<br\/>")); <BR>} <br><br>function html2txt(strS){ <BR> return(strS.replace(/<.+?>/g,"").replace(/,"<").replace(/>/g,">").replace(/ /g," ").replace(/<br\/? <BR>>/g,"\r\n").replace(/&/g,"&")); <BR>} <br><br></script>






    
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神秘的JavaScript:它的作用以及为什么重要 神秘的JavaScript:它的作用以及为什么重要 Apr 09, 2025 am 12:07 AM

JavaScript是现代Web开发的基石,它的主要功能包括事件驱动编程、动态内容生成和异步编程。1)事件驱动编程允许网页根据用户操作动态变化。2)动态内容生成使得页面内容可以根据条件调整。3)异步编程确保用户界面不被阻塞。JavaScript广泛应用于网页交互、单页面应用和服务器端开发,极大地提升了用户体验和跨平台开发的灵活性。

JavaScript的演变:当前的趋势和未来前景 JavaScript的演变:当前的趋势和未来前景 Apr 10, 2025 am 09:33 AM

JavaScript的最新趋势包括TypeScript的崛起、现代框架和库的流行以及WebAssembly的应用。未来前景涵盖更强大的类型系统、服务器端JavaScript的发展、人工智能和机器学习的扩展以及物联网和边缘计算的潜力。

JavaScript引擎:比较实施 JavaScript引擎:比较实施 Apr 13, 2025 am 12:05 AM

不同JavaScript引擎在解析和执行JavaScript代码时,效果会有所不同,因为每个引擎的实现原理和优化策略各有差异。1.词法分析:将源码转换为词法单元。2.语法分析:生成抽象语法树。3.优化和编译:通过JIT编译器生成机器码。4.执行:运行机器码。V8引擎通过即时编译和隐藏类优化,SpiderMonkey使用类型推断系统,导致在相同代码上的性能表现不同。

JavaScript:探索网络语言的多功能性 JavaScript:探索网络语言的多功能性 Apr 11, 2025 am 12:01 AM

JavaScript是现代Web开发的核心语言,因其多样性和灵活性而广泛应用。1)前端开发:通过DOM操作和现代框架(如React、Vue.js、Angular)构建动态网页和单页面应用。2)服务器端开发:Node.js利用非阻塞I/O模型处理高并发和实时应用。3)移动和桌面应用开发:通过ReactNative和Electron实现跨平台开发,提高开发效率。

Python vs. JavaScript:学习曲线和易用性 Python vs. JavaScript:学习曲线和易用性 Apr 16, 2025 am 12:12 AM

Python更适合初学者,学习曲线平缓,语法简洁;JavaScript适合前端开发,学习曲线较陡,语法灵活。1.Python语法直观,适用于数据科学和后端开发。2.JavaScript灵活,广泛用于前端和服务器端编程。

如何使用Next.js(前端集成)构建多租户SaaS应用程序 如何使用Next.js(前端集成)构建多租户SaaS应用程序 Apr 11, 2025 am 08:22 AM

本文展示了与许可证确保的后端的前端集成,并使用Next.js构建功能性Edtech SaaS应用程序。 前端获取用户权限以控制UI的可见性并确保API要求遵守角色库

从C/C到JavaScript:所有工作方式 从C/C到JavaScript:所有工作方式 Apr 14, 2025 am 12:05 AM

从C/C 转向JavaScript需要适应动态类型、垃圾回收和异步编程等特点。1)C/C 是静态类型语言,需手动管理内存,而JavaScript是动态类型,垃圾回收自动处理。2)C/C 需编译成机器码,JavaScript则为解释型语言。3)JavaScript引入闭包、原型链和Promise等概念,增强了灵活性和异步编程能力。

如何安装JavaScript? 如何安装JavaScript? Apr 05, 2025 am 12:16 AM

JavaScript不需要安装,因为它已内置于现代浏览器中。你只需文本编辑器和浏览器即可开始使用。1)在浏览器环境中,通过标签嵌入HTML文件中运行。2)在Node.js环境中,下载并安装Node.js后,通过命令行运行JavaScript文件。

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