1 建立腳本區塊
引用內容程式碼
<script language=”JavaScript”>
JavaScript 程式碼寫在這裡面
</script>
2 隱藏腳本程式碼
引用內容程式碼
<script language=”JavaScript”>
<!--
document.write(“Hello”);
// -->
</script>
在不支援JavaScript的瀏覽器中將不執行相關程式碼
3 瀏覽器不支援的時候顯示
引用內容程式碼
<noscript>
Hello to the non-JavaScript browser.
</noscript>
4 連結外部腳本文件
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<script language=”JavaScript” src="/”filename.js"”></script>
5 註解腳本
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// This is a comment
document.write(“Hello”); // This is a comment
/*
All of this
is a comment
*/
6 輸出到瀏覽器
引用內容程式碼
document.write(“<strong>Hello</strong>”);
7 定義變數
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var myVariable = “some value”;
8 字串相加
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var myString = “String1” + “String2”;
9 字串搜尋
引用內容程式碼
<script language=”JavaScript”>
<!--
var myVariable = “Hello there”;
var therePlace = myVariable.search(“there”);
document.write(therePlace);
// -->
</script>
10 字串替換
引用內容程式碼
thisVar.replace(“Monday”,”Friday”);
11 格式化字符串
引用內容程式碼
<script language=”JavaScript”>
<!--
var myVariable = “Hello there”;
document.write(myVariable.big() + “<br>”);
document.write(myVariable.blink() + “<br>”);
document.write(myVariable.bold() + “<br>”);
document.write(myVariable.fixed() + “<br>”);
document.write(myVariable.fontcolor(“red”) + “<br>”);
document.write(myVariable.fontsize(“18pt”) + “<br>”);
document.write(myVariable.italics() + “<br>”);
document.write(myVariable.small() + “<br>”);
document.write(myVariable.strike() + “<br>”);
document.write(myVariable.sub() + “<br>”);
document.write(myVariable.sup() + “<br>”);
document.write(myVariable.toLowerCase() + “<br>”);
document.write(myVariable.toUpperCase() + “<br>”);
var firstString = “My String”;
var finalString = firstString.bold().toLowerCase().fontcolor(“red”);
// -->
</script>
12 建立數組
引用內容程式碼
<script language=”JavaScript”>
<!--
var myArray = new Array(5);
myArray[0] = “First Entry”;
myArray[1] = “Second Entry”;
myArray[2] = “Third Entry”;
myArray[3] = “Fourth Entry”;
myArray[4] = “Fifth Entry”;
var anotherArray = new Array(“First Entry”,”Second Entry”,”Third Entry”,”Fourth Entry”,”Fifth Entry”);
// -->
</script>
13 數組排序
引用內容程式碼
<script language=”JavaScript”>
<!--
var myArray = new Array(5);
myArray[0] = “z”;
myArray[1] = “c”;
myArray[2] = “d”;
myArray[3] = “a”;
myArray[4] = “q”;
document.write(myArray.sort());
// -->
</script>
14 分割字串
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<script language=”JavaScript”>
<!--
var myVariable = “a,b,c,d”;
var stringArray = myVariable.split(“,”);
document.write(stringArray[0]);
document.write(stringArray[1]);
document.write(stringArray[2]);
document.write(stringArray[3]);
// -->
</script>
15 彈出警告訊息
引用內容程式碼
<script language=”JavaScript”>
<!--
window.alert(“Hello”);
// -->
</script>
16 彈出確認框
引用內容程式碼
<script language=”JavaScript”>
<!--
var result = window.confirm(“Click OK to continue”);
// -->
</script>
17 自訂函數
引用內容程式碼
<script language=”JavaScript”>
<!--
function multiple(number1,number2) {
var result = number1 * number2;
return result;
}
// -->
</script>
18 呼叫JS函數
引用內容程式碼
<a href=”#” onClick=”functionName()”>Link text</a>
<a href="/”javascript:functionName"()”>Link text</a>
19 在頁面載入完成後執行函數
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<body onLoad=”functionName();”>
Body of the page
</body>
20 條件判斷
引用內容程式碼
<script>
<!--
var userChoice = window.confirm(“Choose OK or Cancel”);
var result = (userChoice == true) ? “OK” : “Cancel”;
document.write(result);
// -->
</script>
21 指定次數循環
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<script>
<!--
var myArray = new Array(3);
myArray[0] = “Item 0”;
myArray[1] = “Item 1”;
myArray[2] = “Item 2”;
for (i = 0; i < myArray.length; i++) {
document.write(myArray[i] + “<br>”);
}
// -->
</script>
22 設定將來執行
引用內容程式碼
<script>
<!--
function hello() {
window.alert(“Hello”);
}
window.setTimeout(“hello()”,5000);
// -->
</script>
23 定時執行函數
引用內容程式碼
<script>
<!--
function hello() {
window.alert(“Hello”);
window.setTimeout(“hello()”,5000);
}
window.setTimeout(“hello()”,5000);
// -->
</script>
24 取消定時執行
引用內容程式碼
<script>
<!--
function hello() {
window.alert(“Hello”);
}
var myTimeout = window.setTimeout(“hello()”,5000);
window.clearTimeout(myTimeout);
// -->
</script>
25 在頁面卸載時候執行函數
引用內容程式碼
<body onUnload=”functionName();”>
Body of the page
</body>
JavaScript就這麼回事2：瀏覽器輸出
26 訪問document對象
引用內容程式碼
<script language=”JavaScript”>
var myURL = document.URL;
window.alert(myURL);
</script>
27 動態輸出HTML
引用內容程式碼
<script language=”JavaScript”>
document.write(“<p>Here's some information about this document:</p>”);
document.write(“<ul>”);
document.write(“<li>Referring Document: “ + document.referrer + “</li>”);
document.write(“<li>Domain: “ + document.domain + “</li>”);
document.write(“<li>URL: “ + document.URL + “</li>”);
document.write(“</ul>”);
</script>
28 輸出換行
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document.writeln(“<strong>a</strong>”);
document.writeln(“b”);
29 輸出日期
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<script language=”JavaScript”>
var thisDate = new Date();
document.write(thisDate.toString());
</script>
30 指定日期的時區
引用內容程式碼
<script language=”JavaScript”>
var myOffset = -2;
var currentDate = new Date();
var userOffset = currentDate.getTimezoneOffset()/60;
var timeZoneDifference = userOffset - myOffset;
currentDate.setHours(currentDate.getHours() + timeZoneDifference);
document.write(“The time and date in Central Europe is: “ + currentDate.toLocaleString());
</script>
31 設定日期輸出格式
引用內容程式碼
<script language=”JavaScript”>
var thisDate = new Date();
var thisTimeString = thisDate.getHours() + “:” + thisDate.getMinutes();
var thisDateString = thisDate.getFullYear() + “/” + thisDate.getMonth() + “/” + thisDate.getDate();
document.write(thisTimeString + “ on “ + thisDateString);
</script>
32 讀取URL參數
引用內容程式碼
<script language=”JavaScript”>
var urlParts = document.URL.split(“?”);
var parameterParts = urlParts[1].split(“&”);
for (i = 0; i < parameterParts.length; i++) {
var pairParts = parameterParts[i].split(“=”);
var pairName = pairParts[0];
var pairValue = pairParts[1];
document.write(pairName + “ ：“ +pairValue );
}
</script>
你以為HTML是無狀態的麼？
33 開啟一個新的document對象
引用內容程式碼
<script language=”JavaScript”>
function newDocument() {
document.open();
document.write(“<p>This is a New Document.</p>”);
document.close();
}
</script>
34 頁面跳轉
引用內容程式碼
<script language=”JavaScript”>
window.location = “http://www.x-force.cn/”;
</script>
35 新增網頁載入進度窗口
引用內容程式碼
<html>
<head>
<script language='javaScript'>
var placeHolder = window.open('holder.html','placeholder','width=200,height=200');
</script>
<title>The Main Page</title>
</head>
<body onLoad='placeHolder.close()'>
<p>This is the main page</p>
</body>
</html>
JavaScript就這麼回事3：圖片
36 讀取圖片屬性
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<img src="/”image1.jpg"” name=”myImage”>
<a href=”# ” onClick=”window.alert(document.myImage.width)”>Width</a>
37 動態載入圖片
引用內容程式碼
<script language=”JavaScript”>
myImage = new Image;
myImage.src = “Tellers1.jpg”;
</script>
38 簡單的圖片替換
引用內容程式碼
<script language=”JavaScript”>
rollImage = new Image;
rollImage.src = “rollImage1.jpg”;
defaultImage = new Image;
defaultImage.src = “image1.jpg”;
</script>
<a href="/”myUrl"” onMouseOver=”document.myImage.src = rollImage.src;”
onMouseOut=”document.myImage.src = defaultImage.src;”>
<img src="/”image1.jpg"” name=”myImage” width=100 height=100 border=0>
39 隨機顯示圖片
引用內容程式碼
<script language=”JavaScript”>
var imageList = new Array;
imageList[0] = “image1.jpg”;
imageList[1] = “image2.jpg”;
imageList[2] = “image3.jpg”;
imageList[3] = “image4.jpg”;
var imageChoice = Math.floor(Math.random() * imageList.length);
document.write('<img src=”' + imageList[imageChoice] + '“>');
</script>
40 函數實現的圖像替換
引用內容程式碼
<script language=”JavaScript”>
var source = 0;
var replacement = 1;
function createRollOver(originalImage,replacementImage) {
var imageArray = new Array;
imageArray[source] = new Image;
imageArray[source].src = originalImage;
imageArray[replacement] = new Image;
imageArray[replacement].src = replacementImage;
return imageArray;
}
var rollImage = createRollOver(“image1.jpg”,”rollImage1.jpg”);
</script>
<a href=”#” onMouseOver=”document.myImage1.src = rollImage1[replacement].src;”
onMouseOut=”document.myImage1.src = rollImage1[source].src;”>
<img src="/”image1.jpg"” width=100 name=”myImage1” border=0>
</a>
41 建立幻燈片
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<script language=”JavaScript”>
var imageList = new Array;
imageList[0] = new Image;
imageList[0].src = “image1.jpg”;
imageList[1] = new Image;
imageList[1].src = “image2.jpg”;
imageList[2] = new Image;
imageList[2].src = “image3.jpg”;
imageList[3] = new Image;
imageList[3].src = “image4.jpg”;
function slideShow(imageNumber) {
document.slideShow.src = imageList[imageNumber].src;
imageNumber += 1;
if (imageNumber < imageList.length) {
window.setTimeout(“slideShow(“ + imageNumber + “)”,3000);
}
}
</script>
</head>
<body onLoad=”slideShow(0)”>
<img src="/”image1.jpg"” width=100 name=”slideShow”>
42 隨機廣告圖片
引用內容程式碼
<script language=”JavaScript”>
var imageList = new Array;
imageList[0] = “image1.jpg”;
imageList[1] = “image2.jpg”;
imageList[2] = “image3.jpg”;
imageList[3] = “image4.jpg”;
var urlList = new Array;
urlList[0] = “http://some.host/”;
urlList[1] = “http://another.host/”;
urlList[2] = “http://somewhere.else/”;
urlList[3] = “http://right.here/”;
var imageChoice = Math.floor(Math.random() * imageList.length);
document.write('<a href=”' + urlList[imageChoice] + '“><img src=”' + imageList[imageChoice] + '“></a>');
</script>
JavaScript就這麼回事4：表單
43 表單構成
引用內容程式碼
<form method=”post” action=”target.html” name=”thisForm”>
<input type=”text” name=”myText”>
<select name=”mySelect”>
<option value=”1”>First Choice</option>
<option value=”2”>Second Choice</option>
</select>
<br>
<input type=”submit” value=”Submit Me”>
</form>
44 存取表單中的文字方塊內容
引用內容程式碼
<form name=”myForm”>
<input type=”text” name=”myText”>
</form>
<a href='#' onClick='window.alert(document.myForm.myText.value);'>Check Text Field</a>
45 動態複製文字方塊內容
引用內容程式碼
<form name=”myForm”>
Enter some Text: <input type=”text” name=”myText”><br>
Copy Text: <input type=”text” name=”copyText”>
</form>
<a href=”#” onClick=”document.myForm.copyText.value =
document.myForm.myText.value;”>Copy Text Field</a>
46 偵測文字方塊的變化
引用內容程式碼
<form name=”myForm”>
Enter some Text: <input type=”text” name=”myText” onChange=”alert(this.value);”>
</form>
47 存取選取的Select
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<form name=”myForm”>
<select name=”mySelect”>
<option value=”First Choice”>1</option>
<option value=”Second Choice”>2</option>
<option value=”Third Choice”>3</option>
</select>
</form>
<a href='#' onClick='alert(document.myForm.mySelect.value);'>Check Selection List</a>
48 動態增加Select項
引用內容程式碼
<form name=”myForm”>
<select name=”mySelect”>
<option value=”First Choice”>1</option>
<option value=”Second Choice”>2</option>
</select>
</form>
<script language=”JavaScript”>
document.myForm.mySelect.length++;
document.myForm.mySelect.options[document.myForm.mySelect.length - 1].text = “3”;
document.myForm.mySelect.options[document.myForm.mySelect.length - 1].value = “Third Choice”;
</script>
49 驗證表單字段
引用內容程式碼
<script language=”JavaScript”>
function checkField(field) {
if (field.value == “”) {
window.alert(“You must enter a value in the field”);
field.focus();
}
}
</script>
<form name=”myForm” action=”target.html”>
Text Field: <input type=”text” name=”myField”onBlur=”checkField(this)”>
<br><input type=”submit”>
</form>
50 驗證Select項
引用內容程式碼
function checkList(selection) {
if (selection.length == 0) {
window.alert(“You must make a selection from the list.”);
return false;
}
return true;
}
51 動態改變表單的action
引用內容程式碼
<form name=”myForm” action=”login.html”>
Username: <input type=”text” name=”username”><br>
Password: <input type=”password” name=”password”><br>
<input type=”button” value=”Login” onClick=”this.form.submit();”>
<input type=”button” value=”Register” onClick=”this.form.action = 'register.html'; this.form.submit();”>
<input type=”button” value=”Retrieve Password” onClick=”this.form.action = 'password.html'; this.form.submit();”>
</form>
52 使用圖像按鈕
引用內容程式碼
<form name=”myForm” action=”login.html”>
Username: <input type=”text” name=”username”><br>
Password: <input type=”password”name=”password”><br>
<input type=”image” src="/”login.gif"” value=”Login”>
</form>
53 表單資料的加密
引用內容程式碼
<SCRIPT LANGUAGE='JavaScript'>
<!--
function encrypt(item) {
var newItem = '';
for (i=0; i < item.length; i++) {
newItem += item.charCodeAt(i) + '.';
}
return newItem;
}
function encryptForm(myForm) {
for (i=0; i < myForm.elements.length; i++) {
myForm.elements[i].value = encrypt(myForm.elements[i].value);
}
}
//-->
</SCRIPT>
<form name='myForm' onSubmit='encryptForm(this); window.alert(this.myField.value);'>
Enter Some Text: <input type=text name=myField><input type=submit>
</form>
JavaScript就這麼回事5：視窗與框架
54 改變瀏覽器狀態列文字提示
引用內容程式碼
<script language=”JavaScript”>
window.status = “A new status message”;
</script>
55 彈出確認提示框
引用內容程式碼
<script language=”JavaScript”>
var userChoice = window.confirm(“Click OK or Cancel”);
if (userChoice) {
document.write(“You chose OK”);
} else {
document.write(“You chose Cancel”);
}
</script>
56 提示輸入
引用內容程式碼
<script language=”JavaScript”>
var userName = window.prompt(“Please Enter Your Name”,”Enter Your Name Here”);
document.write(“Your Name is “ + userName);
</script>
57 開啟一個新窗口
引用內容//開啟一個名稱為myNewWindow的瀏覽器新視窗程式碼
<script language=”JavaScript”>
window.open(“http://www.liu21st.com/”,”myNewWindow”);
</script>
58 設定新視窗的大小
引用內容程式碼
<script language=”JavaScript”>
window.open(“http://www.liu21st.com/”,”myNewWindow”,'height=300,width=300');
</script>
59 設定新視窗的位置
引用內容程式碼
<script language=”JavaScript”>
window.open(“http://www.liu21st.com/”,”myNewWindow”,'height=300,width=300,left=200,screenX=200,top=100,screenY=100');
</script>
60 是否顯示工具列和捲動列
引用內容程式碼
<script language=”JavaScript”>
window.open(“http://www.x-force.cn/",toolbar=no, menubar=no);
</script>
61 是否可以縮放新視窗的大小
引用內容程式碼
<script language=”JavaScript”>
window.open('http://www.x-force.cn/' , 'myNewWindow', 'resizable=yes' );</script>
62 載入一個新的文件到目前窗口
引用內容程式碼
<a href='#' onClick='document.location = '125a.html';' >Open New Document</a>
63 設定頁面的捲動位置
引用內容程式碼
<script language=”JavaScript”>
if (document.all) { //如果是IE瀏覽器則使用scrollTop屬性
document.body.scrollTop = 200;
} else { //如果是NetScape瀏覽器則使用pageYOffset屬性
window.pageYOffset = 200;
}</script>
64 在IE中開啟全螢幕窗口
引用內容程式碼
<a href='#' onClick=”window.open('http://www.devdao.com/','newWindow','fullScreen=yes');”>Open a full-screen window</a>
65 新視窗和父視窗的操作
引用內容程式碼
<script language=”JavaScript”>
//定義新視窗
var newWindow = window.open(“128a.html”,”newWindow”);
newWindow.close(); //在父視窗中關閉開啟的新視窗
</script>在新視窗中關閉父視窗程式碼
window.opener.close()
66 往新視窗中寫入內容
引用內容程式碼
<script language=”JavaScript”>
var newWindow = window.open(“”,”newWindow”);
newWindow.document.open();
newWindow.document.write(“This is a new window”);
newWIndow.document.close();
</script>
67 載入頁面到框架頁面
引用內容程式碼
<frameset cols=”50%,*”>
<frame name=”frame1” src="/”135a.html"”>
<frame name=”frame2” src="/”about:blank"”>
</frameset>
在frame1中載入frame2中的頁面
parent.frame2.document.location = “135b.html”;
68 在框架頁面之間共用腳本
引用內容如果在frame1中html檔中有個腳本程式碼
function doAlert() {
window.alert(“Frame 1 is loaded”);
}
那麼在frame2中可以如此呼叫該方法
程式碼
<body onLoad=”parent.frame1.doAlert();”>
This is frame 2.
</body>
69 資料公用
引用內容可以在框架頁面定義資料項，使得該資料可以被多個框架中的頁面公用程式程式碼
<script language=”JavaScript”>
var persistentVariable = “This is a persistent value”;
</script>
<frameset cols=”50%,*”>
<frame name=”frame1” src="/”138a.html"”>
<frame name=”frame2” src="/”138b.html"”>
</frameset>
這樣在frame1和frame2中都可以使用變數persistentVariable
70 框架程式碼庫
引用內容根據以上的一些思路，我們可以使用一個隱藏的框架頁面來作為整個框架集的程式碼庫程式
碼
<frameset cols=”0,50%,*”>
<frame name=”codeFrame” src="/”140code.html"”>
<frame name=”frame1” src="/”140a.html"”>
<frame name=”frame2” src="/”140b.html"”>
</frameset>