onkeydown.htm

来自「物业管理和办公自动化系统」· HTM 代码 · 共 54 行

HTM
54 行
字号 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
	<TITLE>onkeydown Event Sample</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=iso-8859-1">
<META NAME="AUTHOR" CONTENT="InetSDK">
<META NAME="MS.LOCALE" CONTENT="EN-US">
<SCRIPT>

function fnTrapKD(){
	if(oTrap.checked){
		oOutput.innerText+="[trap = " + event.keyCode + "]";
		event.returnValue=false;
	}
	else{
		oOutput.innerText+=String.fromCharCode(event.keyCode);
	}
}
</SCRIPT>
</HEAD>

<!-- SAMPLE_STYLE_START -->
<LINK REL="stylesheet" HREF="../../../../../workshop/basicsdkie4.css" 
TYPE="text/css">
<!-- SAMPLE_STYLE_END -->

<BODY>

<!--TOOLBAR_START-->
<!--TOOLBAR_EXEMPT-->
<!--TOOLBAR_END-->

<BLOCKQUOTE>

<H1>onkeydown Sample</h1>

<P>This sample demonstrates the implementation of the <b>onkeydown</b> event. As of Internet Explorer 5, most keys that fire the <b>onkeydown</b> event are cancelable.</P>

<P>Type some text into the <LABEL FOR=oExample>Example Text</LABEL> field. 
If the <LABEL FOR=oTrap>Cancel onkeydown Event</LABEL> check box is checked, the key strokes do not show up in the text field, and "[trap]" is displayed in the <b>TEXTAREA</b> element. If the check box is not checked, the key strokes are displayed in both the text field and the <b>TEXTAREA</b> element.</P> 

<FIELDSET>
<LEGEND>onkeydown Sample</LEGEND>
<P><LABEL FOR=oTrap>Cancel onkeydown Event:</LABEL> <INPUT TYPE=checkbox ID=oTrap></P>
<LABEL FOR=oExample>Example Text:</LABEL> <INPUT ID=oExample TYPE=TEXT onkeydown="fnTrapKD();alert(oExample.value);">
<P>
<TEXTAREA ID=oOutput ROWS=10 COLS=50>
</TEXTAREA>
</FIELDSET>
</BLOCKQUOTE>
<!-- START_PAGE_FOOTER -->
<!-- END_PAGE_FOOTER -->
</BODY>
</HTML>

onkeydown.htm - 源码说明

本页面展示了「物业管理和办公自动化系统」中的 onkeydown.htm 源码文件，采用 HTM 编程语言编写，共 54 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

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