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js method to control the status display when the input box gains and loses focus_javascript skills

WBOY
WBOYOriginal
2016-05-16 16:16:551749browse

The example in this article describes the method of using js to control the status display when the input box gains and loses focus. Share it with everyone for your reference. The specific implementation method is as follows: 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>边框变色</title> 
<style type="text/css"> 
<!-- 
.SearchKeyword {border:1px solid #797A75;width: 202px;color: #CDCDCD;font-size:12px;} 
.SearchKeywordonFocus {border:1px solid #ABCD3A;width: 202px;color: #000000;font-size:12px;} 
--> 
</style> 
<script language="javascript"> 
function keywordfocus() 
{ 
if (document.formSearch.keyword.value == '请输入关键字') 
{ 
document.formSearch.keyword.value = ''; 
document.formSearch.keyword.className = 'SearchKeywordonFocus'; 
} 
} 
function keywordblur() 
{ 
if (document.formSearch.keyword.value == '') 
{ 
document.formSearch.keyword.value = '请输入关键字'; 
document.formSearch.keyword.className = 'SearchKeyword'; 
} 
} 
</SCRIPT> 
</head> 
<body> 
<form id="formSearch" name="formSearch" method="post" action=""> 
<input type="text" name="keyword" class="SearchKeyword" value="请输入关键字" onFocus="keywordfocus();" onBlur="keywordblur();" /> 
</form> 
</body> 
</html>

I hope this article will be helpful to everyone’s JavaScript programming design.

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