21 指定次数循环
1 : < script > 2 : <!-- 3 : var myArray = new Array( 3 ); 4 : myArray[ 0 ] = “Item 0 ”; 5 : myArray[ 1 ] = “Item 1 ”; 6 : myArray[ 2 ] = “Item 2 ”; 7 : for (i = 0 ; i < myArray.length; i ++ ) ... { 8: document.write(myArray[i] + “<br/>”);9: } 10 : // --> 11 : </ script >22 设定将来执行
1 : < script > 2 : <!-- 3 : function hello() ... { 4: window.alert(“Hello”);5: } 6 : window.setTimeout(“hello()”, 5000 ); 7 : // --> 8 : </ script >23 定时执行函数
1 : < script > 2 : <!-- 3 : function hello() ... { 4: window.alert(“Hello”);5: window.setTimeout(“hello()”,5000);6: } 7 : window.setTimeout(“hello()”, 5000 ); 8 : // --> 9 : </ script >24 取消定时执行
1 : < script > 2 : <!-- 3 : function hello() ... { 4: window.alert(“Hello”);5: } 6 : var myTimeout = window.setTimeout(“hello()”, 5000 ); 7 : window.clearTimeout(myTimeout); 8 : // --> 9 : </ script >25 在页面卸载时候执行函数
1: < body onUnload =”functionName();” > 2: Body of the page3: </ body >JavaScript就这么回事2：浏览器输出
26 访问document对象
1 : < script language = ”JavaScript” > 2 : var myURL = document.URL; 3 : window.alert(myURL); 4 : </ script >27 动态输出HTML
1 : < script language = ”JavaScript” > 2 : document.write(“ < p > Here’s some information about this document: </ p > ”); 3 : document.write(“ < ul > ”); 4 : document.write(“ < li > Referring Document: “ + document.referrer + “ </ li > ”); 5 : document.write(“ < li > Domain: “ + document.domain + “ </ li > ”); 6 : document.write(“ < li > URL: “ + document.URL + “ </ li > ”); 7 : document.write(“ </ ul > ”); 8 : </ script >28 输出换行
1 : document.writeln(“ < strong > a </ strong > ”); 2 : document.writeln(“b”);29 输出日期
1 : < script language = ”JavaScript” > 2 : var thisDate = new Date(); 3 : document.write(thisDate.toString()); 4 : </ script >30 指定日期的时区
1 : < script language = ”JavaScript” > 2 : var myOffset = - 2 ; 3 : var currentDate = new Date(); 4 : var userOffset = currentDate.getTimezoneOffset() / 60 ; 5 : var timeZoneDifference = userOffset - myOffset; 6 : currentDate.setHours(currentDate.getHours() + timeZoneDifference); 7 : document.write(“The time and date in Central Europe is: “ + currentDate.toLocaleString()); 8 : </ script >31 设置日期输出格式
1 : < script language = ”JavaScript” > 2 : var thisDate = new Date(); 3 : var thisTimeString = thisDate.getHours() + “:” + thisDate.getMinutes(); 4 : var thisDateString = thisDate.getFullYear() + “ / ” + thisDate.getMonth() + “ / ” + thisDate.getDate(); 5 : document.write(thisTimeString + “ on “ + thisDateString); 6 : </ script >32 读取URL参数
1 : < script language = ”JavaScript” > 2 : var urlParts = document.URL.split(“ ? ”); 3 : var parameterParts = urlParts[ 1 ].split(“ & ”); 4 : for (i = 0 ; i < parameterParts.length; i ++ ) ... { 5: var pairParts = parameterParts[i].split(“=”);6: var pairName = pairParts[0];7: var pairValue = pairParts[1];8: document.write(pairName + “ ：“ +pairValue );9: } 10 : </ script >你还以为HTML是无状态的么？
33 打开一个新的document对象
1 : < script language = ”JavaScript” > 2 : function newDocument() ... { 3: document.open();4: document.write(“<p>This is a New Document.</p>”);5: document.close();6: } 7 : </ script >34 页面跳转
1 : < script language = ”JavaScript” > 2 : window.location = “http: // www.liu21st.com/”; 3 : </ script >35 添加网页加载进度窗口
1: < html > 2: < head > 3: < script language ='javaScript' > ... 4: var placeHolder = window.open('holder.html','placeholder','width=200,height=200');5: </ script > 6: < title > The Main Page </ title > 7: </ head > 8: < body onLoad ='placeHolder.close()' > 9: < p > This is the main page </ p > 10: </ body > 11: </ html >
