JavaScript基础知识(三)
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 + “<br>”); 9: } 10: // --> 11: </script> 22 设定未来执行 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 page 3: </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>
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 + “<br>”); 9: } 10: // --> 11: </script> 22 设定未来执行 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 page 3: </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>
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