Javascript 新手教程

JavaScript就这么回事1-5（转的一个不错的JavaScript基础教程）2008年01月06日星期日13:55JavaScript就这么回事1-5（转的一个不错的JavaScript基础教程）有些时候你精通一门语言，但是会发现你其实整天在和其它语言打交道，也许你以为这些微不足道，不至于影响你的开发进度，但恰恰是这些你不重视的东西会浪费你很多时间，我一直以为我早在几年前就已经精通JavaScript了，直到目前，我才越来越觉得JavaScript远比我想象的复杂和强大，我开始崇拜它，就像崇拜所有OOP语言一样～趁着节日的空隙，把有关JavaScript的方法和技巧整理下，让每个在为JavaScript而烦恼的人明白，JavaScript就这么回事！并希望JavaScript还可以成为你的朋友，让你豁然开朗，在项目中更好的应用～适合阅读范围：对JavaScript一无所知～离精通只差一步之遥的人基础知识：HTMLJavaScript就这么回事1：基础知识1创建脚本块1:scriptlanguage=”JavaScript”2:JavaScriptcodegoeshere3:/script2隐藏脚本代码1:scriptlanguage=”JavaScript”2:!--3:document.write(“Hello”);4://--5:/script在不支持JavaScript的浏览器中将不执行相关代码3浏览器不支持的时候显示1:noscript2:Hellotothenon-JavaScriptbrowser.3:/noscript4链接外部脚本文件1:scriptlanguage=”JavaScript”src=/”filename.js”/script5注释脚本1://Thisisacomment2:document.write(“Hello”);//Thisisacomment3:/*4:Allofthis5:isacomment6:*/6输出到浏览器1:document.write(“strongHello/strong”);7定义变量1:varmyVariable=“somevalue”;8字符串相加1:varmyString=“String1”+“String2”;9字符串搜索1:scriptlanguage=”JavaScript”2:!--3:varmyVariable=“Hellothere”;4:vartherePlace=myVariable.search(“there”);5:document.write(therePlace);6://--7:/script10字符串替换1:thisVar.replace(“Monday”,”Friday”);11格式化字串1:scriptlanguage=”JavaScript”2:!--3:varmyVariable=“Hellothere”;4:document.write(myVariable.big()+“br”);5:document.write(myVariable.blink()+“br”);6:document.write(myVariable.bold()+“br”);7:document.write(myVariable.fixed()+“br”);8:document.write(myVariable.fontcolor(“red”)+“br”);9:document.write(myVariable.fontsize(“18pt”)+“br”);10:document.write(myVariable.italics()+“br”);11:document.write(myVariable.small()+“br”);12:document.write(myVariable.strike()+“br”);13:document.write(myVariable.sub()+“br”);14:document.write(myVariable.sup()+“br”);15:document.write(myVariable.toLowerCase()+“br”);16:document.write(myVariable.toUpperCase()+“br”);17:18:varfirstString=“MyString”;19:varfinalString=firstString.bold().toLowerCase().fontcolor(“red”);20://--21:/script12创建数组1:scriptlanguage=”JavaScript”2:!--3:varmyArray=newArray(5);4:myArray[0]=“FirstEntry”;5:myArray[1]=“SecondEntry”;6:myArray[2]=“ThirdEntry”;7:myArray[3]=“FourthEntry”;8:myArray[4]=“FifthEntry”;9:varanotherArray=newArray(“FirstEntry”,”SecondEntry”,”ThirdEntry”,”FourthEntry”,”FifthEntry”);10://--11:/script13数组排序1:scriptlanguage=”JavaScript”2:!--3:varmyArray=newArray(5);4:myArray[0]=“z”;5:myArray[1]=“c”;6:myArray[2]=“d”;7:myArray[3]=“a”;8:myArray[4]=“q”;9:document.write(myArray.sort());10://--11:/script14分割字符串1:scriptlanguage=”JavaScript”2:!--3:varmyVariable=“a,b,c,d”;4:varstringArray=myVariable.split(“,”);5:document.write(stringArray[0]);6:document.write(stringArray[1]);7:document.write(stringArray[2]);8:document.write(stringArray[3]);9://--10:/script15弹出警告信息1:scriptlanguage=”JavaScript”2:!--3:window.alert(“Hello”);4://--5:/script16弹出确认框1:scriptlanguage=”JavaScript”2:!--3:varresult=window.confirm(“ClickOKtocontinue”);4://--5:/script17定义函数1:scriptlanguage=”JavaScript”2:!--3:functionmultiple(number1,number2){4:varresult=number1*number2;5:returnresult;6:}7://--8:/script18调用JS函数1:ahref=”#”onClick=”functionName()”Linktext/a2:ahref=/”javascript:functionName()”Linktext/a19在页面加载完成后执行函数1:bodyonLoad=”functionName();”2:Bodyofthepage3:/body20条件判断1:script2:!--3:varuserChoice=window.confirm(“ChooseOKorCancel”);4:varresult=(userChoice==true)?“OK”:“Cancel”;5:document.write(result);6://--7:/script21指定次数循环1:script2:!--3:varmyArray=newArray(3);4:myArray[0]=“Item0”;5:myArray[1]=“Item1”;6:myArray[2]=“Item2”;7:for(i=0;imyArray.length;i++){8:document.write(myArray[i]+“br”);9:}10://--11:/script22设定将来执行1:script2:!--3:functionhello(){4:window.alert(“Hello”);5:}6:window.setTimeout(“hello()”,5000);7://--8:/script23定时执行函数1:script2:!--3:functionhello(){4:window.alert(“Hello”);5:window.setTimeout(“hello()”,5000);6:}7:window.setTimeout(“hello()”,5000);8://--9:/script24取消定时执行1:script2:!--3:functionhello(){4:window.alert(“Hello”);5:}6:varmyTimeout=window.setTimeout(“hello()”,5000);7:window.clearTimeout(myTimeout);8://--9:/script25在页面卸载时候执行函数1:bodyonUnload=”functionName();”2:Bodyofthepage3:/bodyJavaScript就这么回事2：浏览器输出26访问document对象1:scriptlanguage=”JavaScript”2:varmyURL=document.URL;3:window.alert(myURL);4:/script27动态输出HTML1:scriptlanguage=”JavaScript”2:document.write(“pHere’ssomeinformationaboutthisdocument:/p”);3:document.write(“ul”);4:document.write(“liReferringDocument:“+document.referrer+“/li”);5:document.write(“liDomain:“+document.domain+“/li”);6:document.write(“liURL:“+document.URL+“/li”);7:document.write(“/ul”);8:/script28输出换行1:document.writeln(“stronga/strong”);2:document.writeln(“b”);29输出日期1:scriptlanguage=”JavaScript”2:varthisDate=newDate();3:document.write(thisDate.toString());4:/script30指定日期的时区1:scriptlanguage=”JavaScript”2:varmyOffset=-2;3:varcurrentDate=newDate();4:varuserOffset=currentDate.getTimezoneOffset()/60;5:vartimeZoneDifference=userOffset-myOffset;6:c