This article describes the method of displaying status when js controls the input box to obtain and lose focus. Share it 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>Border color change</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 == 'Please enter keyword') { document.formSearch.keyword.value = ''; document.formSearch.keyword.className = 'SearchKeywordonFocus'; } } function keywordblur() { if (document.formSearch.keyword.value == '') { document.formSearch.keyword.value = 'Please enter keyword'; document.formSearch.keyword.className = 'SearchKeyword'; } } </SCRIPT> </head> <body> <form id="formSearch" name="formSearch" method="post" action=""> <input type="text" name="keyword" value="Please enter keyword" onFocus="keywordfocus();" onBlur="keywordblur();" /> </form> </body> </html>I hope this article will be helpful to everyone's JavaScript programming.