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JavaScript相关资料收集

2008-03-14 16:32 477 查看

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：HTML

Javascript就这么回事1：基础知识

1 创建脚本块

1: <script language="Javascript">

2: Javascript code goes here

3: </script>

2 隐藏脚本代码

1: <script language="Javascript">

2: 

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: <noscript>

2: Hello to the non-Javascript browser.

3: </noscript>

4 链接外部脚本文件

1: <script language="Javascript" src="/"filename.js""></script>

5 注释脚本

1: // This is a comment

2: document.write(“Hello"); // This is a comment

3: /*

4: All of this

5: is a comment

6: */

6 输出到浏览器

1: document.write(“<strong>Hello</strong>");

7 定义变量

1: var myVariable = “some value";

8 字符串相加

1: var myString = “String1" + “String2";

9 字符串搜索

1: <script language="Javascript">

2: 

7: </script>

10 字符串替换

1: thisVar.replace(“Monday","Friday");

11 格式化字串

1: <script language="Javascript">

2: 

21: </script>

12 创建数组

1: <script language="Javascript">

2: 

11: </script>

13 数组排序

1: <script language="Javascript">

2: 

11: </script>

14 分割字符串

1: <script language="Javascript">

2: 

10: </script>

15 弹出警告信息

1: <script language="Javascript">

2: 

5: </script>

16 弹出确认框

1: <script language="Javascript">

2: 

5: </script>

17 定义函数

1: <script language="Javascript">

2: 

8: </script>

18 调用JS函数

1: <a href="#" onClick="functionName()">Link text</a>

2: <a href="/"javascript:functionName"()">Link text</a>

19 在页面加载完成后执行函数

1: <body onLoad="functionName();">

2: Body of the page

3: </body>

20 条件判断

1: <script>

2: 

7: </script>

21 指定次数循环

1: <script>

2: 

11: </script>

22 设定将来执行

1: <script>

2: 

8: </script>

23 定时执行函数

1: <script>

2: 

9: </script>

24 取消定时执行

1: <script>

2: 

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>

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>

Javascript就这么回事3：图像

36 读取图像属性

1: <img src="/"image1.jpg"" name="myImage">

2: <a href="# " onClick="window.alert(document.myImage.width)">Width</a>

3:

37 动态加载图像

1: <script language="Javascript">

2: myImage = new Image;

3: myImage.src = “Tellers1.jpg";

4: </script>

38 简单的图像替换

1: <script language="Javascript">

2: rollImage = new Image;

3: rollImage.src = “rollImage1.jpg";

4: defaultImage = new Image;

5: defaultImage.src = “image1.jpg";

6: </script>

7: <a href="/"myUrl"" onMouseOver="document.myImage.src = rollImage.src;"

8: onMouseOut="document.myImage.src = defaultImage.src;">

9: <img src="/"image1.jpg"" name="myImage" width=100 height=100 border=0>

39 随机显示图像

1: <script language="Javascript">

2: var imageList = new Array;

3: imageList[0] = “image1.jpg";

4: imageList[1] = “image2.jpg";

5: imageList[2] = “image3.jpg";

6: imageList[3] = “image4.jpg";

7: var imageChoice = Math.floor(Math.random() * imageList.length);

8: document.write(‘<img src="’ + imageList[imageChoice] + ‘“>’);

9: </script>

40 函数实现的图像替换

1: <script language="Javascript">

2: var source = 0;

3: var replacement = 1;

4: function createRollOver(originalImage,replacementImage) {

5: var imageArray = new Array;

6: imageArray[source] = new Image;

7: imageArray[source].src = originalImage;

8: imageArray[replacement] = new Image;

9: imageArray[replacement].src = replacementImage;

10: return imageArray;

11: }

12: var rollImage1 = createRollOver(“image1.jpg","rollImage1.jpg");

13: </script>

14: <a href="#" onMouseOver="document.myImage1.src = rollImage1[replacement].src;"

15: onMouseOut="document.myImage1.src = rollImage1[source].src;">

16: <img src="/"image1.jpg"" width=100 name="myImage1" border=0>

17: </a>

41 创建幻灯片

1: <script language="Javascript">

2: var imageList = new Array;

3: imageList[0] = new Image;

4: imageList[0].src = “image1.jpg";

5: imageList[1] = new Image;

6: imageList[1].src = “image2.jpg";

7: imageList[2] = new Image;

8: imageList[2].src = “image3.jpg";

9: imageList[3] = new Image;

10: imageList[3].src = “image4.jpg";

11: function slideShow(imageNumber) {

12: document.slideShow.src = imageList[imageNumber].src;

13: imageNumber += 1;

14: if (imageNumber < imageList.length) {

15: window.setTimeout(“slideShow(“ + imageNumber + “)",3000);

16: }

17: }

18: </script>

19: </head>

20: <body onLoad="slideShow(0)">

21: <img src="/"image1.jpg"" width=100 name="slideShow">

42 随机广告图片

1: <script language="Javascript">

2: var imageList = new Array;

3: imageList[0] = “image1.jpg";

4: imageList[1] = “image2.jpg";

5: imageList[2] = “image3.jpg";

6: imageList[3] = “image4.jpg";

7: var urlList = new Array;

8: urlList[0] = “http://some.host/";

9: urlList[1] = “http://another.host/";

10: urlList[2] = “http://somewhere.else/";

11: urlList[3] = “http://right.here/";

12: var imageChoice = Math.floor(Math.random() * imageList.length);

13: document.write(‘<a href="’ + urlList[imageChoice] + ‘“><img src="’ + imageList[imageChoice] + ‘“></a>’);

14: </script>

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