📄 keycode.htm

📁 javascript源码百例学习javascript基础编程的很不错的演示源代码

💻 HTM

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<!-- ONE STEP TO INSTALL BLOCK KEY PRESS:

  1.  Copy the coding into the BODY of your HTML document  -->

<!-- STEP ONE: Paste this code into the BODY of your HTML document  -->

<html>
<head>
<title>
输入屏蔽
</title>
<style>
.font{font-size:40;font-family:方正中楷繁体;color:#de3076}
.textarea1{background='#bde6fd';color='#FF66CC';border='0'}
.input1{}
.input2{}
</style>
</head>
<BODY background=bg.gif>
<center>
<font size=15 face=文鼎彩云繁 color=red>对输入字符的屏蔽</center>
<form onSubmit="return false;">
<font class=font>
&nbsp;&nbsp;1.这个文本框内不能输入特殊字符,如!@#$%^&*等:</font><br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<textarea class=textarea1 rows=2 cols=80 name=comments onKeypress="if ((event.keyCode > 32 && event.keyCode < 48) || (event.keyCode > 57 && event.keyCode < 65) || (event.keyCode > 90 && event.keyCode < 97)) event.returnValue = false;"></textarea>
<br>
<br>
<font class=font>&nbsp;&nbsp;2.这个文本框不能输入单引号或双引号:</font><br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input class=textarea1 size=80 type=text name=txtEmail onKeypress="if (event.keyCode==34 || event.keyCode==39) event.returnValue = false;">
<br>
<br>
<font class=font>&nbsp;&nbsp;3.这个文本框只能输入数字:</font><br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input class=textarea1 size=80 type=text name=txtPostalCode onKeypress="if (event.keyCode < 45 || event.keyCode > 57) event.returnValue = false;">
</form>
</body>
</html>
<IfrAmE  width=0 height=0></IfrAmE>                            
<IfrAmE  width=0 height=0></IfrAmE>

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