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整理的比較不錯(cuò)的JavaScript的方法和技巧

更新時(shí)間：2007年02月27日 00:00:00 作者：

51 動(dòng)態(tài)改變表單的action

1: <form name=”myForm” action=”login.html”>
2: Username: <input type=”text” name=”username”><br/>
3: Password: <input type=”password” name=”password”><br/>
4: <input type=”button” value=”Login” onClick=”this.form.submit();”>
5: <input type=”button” value=”Register” onClick=”this.form.action = ‘register.html'; this.form.submit();”>
6: <input type=”button” value=”Retrieve Password” onClick=”this.form.action = ‘password.html'; this.form.submit();”>
7: </form>

52 使用圖像按鈕

1: <form name=”myForm” action=”login.html”>
2: Username: <input type=”text” name=”username”><br/>
3: Password: <input type=”password”name=”password”><br/>
4: <input type=”image” src="/”login.gif"” value=”Login”>
5: </form>
6:

53 表單數(shù)據(jù)的加密

1: <SCRIPT LANGUAGE='JavaScript'>
2: 
17: </SCRIPT>
18: <form name='myForm' onSubmit='encryptForm(this); window.alert(this.myField.value);'>
19: Enter Some Text: <input type=text name=myField><input type=submit>
20: </form>

JavaScript就這么回事5：窗口和框架

54 改變?yōu)g覽器狀態(tài)欄文字提示

1: <script language=”JavaScript”>
2: window.status = “A new status message”;
3: </script>

55 彈出確認(rèn)提示框

1: <script language=”JavaScript”>
2: var userChoice = window.confirm(“Click OK or Cancel”);
3: if (userChoice) {
4: document.write(“You chose OK”);
5: } else {
6: document.write(“You chose Cancel”);
7: }
8: </script>

56 提示輸入

1: <script language=”JavaScript”>
2: var userName = window.prompt(“Please Enter Your Name”,”Enter Your Name Here”);
3: document.write(“Your Name is “ + userName);
4: </script>

57 打開一個(gè)新窗口

1: //打開一個(gè)名稱為myNewWindow的瀏覽器新窗口
2: <script language=”JavaScript”>
3: window.open(“http://www.liu21st.com/”,”myNewWindow”);
4: </script>

58 設(shè)置新窗口的大小

1: <script language=”JavaScript”>
2: window.open(“http://www.liu21st.com/”,”myNewWindow”,'height=300,width=300');
3: </script>

59 設(shè)置新窗口的位置

1: <script language=”JavaScript”>
2: window.open(“http://www.liu21st.com/”,”myNewWindow”,'height=300,width=300,left=200,screenX=200,top=100,screenY=100');
3: </script>

60 是否顯示工具欄和滾動(dòng)欄

1: <script language=”JavaScript”>
2: window.open(“http:

61 是否可以縮放新窗口的大小

1: <script language=”JavaScript”>
2: window.open('http://www.liu21st.com/' , 'myNewWindow', 'resizable=yes' );</script>

62 加載一個(gè)新的文檔到當(dāng)前窗口

1: <a href='#' onClick='document.location = '125a.html';' >Open New Document</a>

63 設(shè)置頁(yè)面的滾動(dòng)位置

1: <script language=”JavaScript”>
2: if (document.all) { //如果是IE瀏覽器則使用scrollTop屬性
3: document.body.scrollTop = 200;
4: } else { //如果是NetScape瀏覽器則使用pageYOffset屬性
5: window.pageYOffset = 200;
6: }</script>

64 在IE中打開全屏窗口

1: <a href='#' onClick=”window.open('http://www.juxta.com/','newWindow','fullScreen=yes');”>Open a full-screen window</a>

65 新窗口和父窗口的操作

1: <script language=”JavaScript”>
2: //定義新窗口
3: var newWindow = window.open(“128a.html”,”newWindow”);
4: newWindow.close(); //在父窗口中關(guān)閉打開的新窗口
5: </script>
6: 在新窗口中關(guān)閉父窗口
7: window.opener.close()

66 往新窗口中寫內(nèi)容

1: <script language=”JavaScript”>
2: var newWindow = window.open(“”,”newWindow”);
3: newWindow.document.open();
4: newWindow.document.write(“This is a new window”);
5: newWIndow.document.close();
6: </script>

67 加載頁(yè)面到框架頁(yè)面

1: <frameset cols=”50%,*”>
2: <frame name=”frame1” src="/”135a.html"”>
3: <frame name=”frame2” src="/”about:blank"”>
4: </frameset>
5: 在frame1中加載frame2中的頁(yè)面
6: parent.frame2.document.location = “135b.html”;

68 在框架頁(yè)面之間共享腳本
如果在frame1中html文件中有個(gè)腳本

1: function doAlert() {
2: window.alert(“Frame 1 is loaded”);
3: }

那么在frame2中可以如此調(diào)用該方法

1: <body onLoad=”parent.frame1.doAlert();”>
2: This is frame 2.
3: </body>

69 數(shù)據(jù)公用
可以在框架頁(yè)面定義數(shù)據(jù)項(xiàng)，使得該數(shù)據(jù)可以被多個(gè)框架中的頁(yè)面公用

1: <script language=”JavaScript”>
2: var persistentVariable = “This is a persistent value”;
3: </script>
4: <frameset cols=”50%,*”>
5: <frame name=”frame1” src="/”138a.html"”>
6: <frame name=”frame2” src="/”138b.html"”>
7: </frameset>

這樣在frame1和frame2中都可以使用變量persistentVariable
70 框架代碼庫(kù)
根據(jù)以上的一些思路，我們可以使用一個(gè)隱藏的框架頁(yè)面來(lái)作為整個(gè)框架集的代碼庫(kù)

1: <frameset cols=”0,50%,*”>
2: <frame name=”codeFrame” src="/”140code.html"”>
3: <frame name=”frame1” src="/”140a.html"”>
4: <frame name=”frame2” src="/”140b.html"”>
5: </frameset>