JavaScript方法和技巧大全2

35 添加网页加载进度窗口

1:
2:
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6: The Main Page
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9:

This is the main page


10:
11:

 

 

JavaScript就这么回事3:图像

 

36 读取图像属性

1:
2: Width
3:


37 动态加载图像

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38 简单的图像替换

1:
7: 8: onMouseOut=”document.myImage.src = defaultImage.src;”>
9:


39 随机显示图像

1:


40 函数实现的图像替换

1: 8: imageArray[replacement] = new Image;
9: imageArray[replacement].src = replacementImage;
10: return imageArray;
11: }
12: var rollImage1 = createRollOver(“image1.jpg”,”rollImage1.jpg”);
13:
14:
15: onMouseOut=”document.myImage1.src = rollImage1[source].src;”>
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17:

 


41 创建幻灯片

1:
19:
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42 随机广告图片

1:  13: document.write(‘’);
14:

 

JavaScript就这么回事4:表单


还是先继续写完JS就这么回事系列吧~
43 表单构成

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44 访问表单中的文本框内容

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2:
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4: Check Text Field


45 动态复制文本框内容

1:



2: Enter some Text:

3: Copy Text:
4:

5: 6: document.myForm.myText.value;”>Copy Text Field


46 侦测文本框的变化

1:


2: Enter some Text:
3:


47 访问选中的Select

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2:
7:

8: Check Selection List

48 动态增加Select项

 

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49 验证表单字段

1:
9:


10: Text Field:
11:

12:


50 验证Select项

1: function checkList(selection) {
2: if (selection.length == 0) {

3: window.alert(“You must make a selection from the list.”);
4: return false;
5: }
6: return true;
7: }


51 动态改变表单的action

1:


2: Username:

3: PassWord:

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5:
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