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例2（访问一个特定元素） <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>单击DIV变色</title> <style type="text/css"> <!-- #docid{ height:400px; width:400px; background-color:#999;} --> </style> </head> <body><div id="docid" name="docname" onClick="bgcolor()"></div> </body> </html> <script language="javascript" type="text/javascript"> <!-- function bgcolor(){ document.all[7].style.backgroundColor="#000" } --> </script> 上面的这个例子让你了解怎么访问文档中的一个特定元素，比如文档中有一个DIV <div id="docid" name="docname"></div>，你可以通过这个DIV的ID，NAME或INDEX属性访问这个DIV： document.all["docid"] document.all["docname"] document.all.item("docid") document.all.item("docname") document.all[7] document.all.tags("div")则返回文档中所有DIV数组，本例中只有一个DIV，所以用 document.all.tags("div")[0]就可以访问了。 2、使用document.all[] 例3 <!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> <title> Document.All Example #2</title> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" /> </head> <body> <!-- Works in Internet Explorer and compatible --> <h1 id="heading1" align="center" style="font-size: larger;">DHTML Fun!!!</h1> <form name="testform" id="testform" action="#" method="get"> <br /><br /> <input type="button" value="Align Left" οnclick=" document.all['heading1'].align='left';" /> <input type="button" value="Align Center" οnclick=" document.all['heading1'].align='center';" /> <input type="button" value="Align Right" οnclick=" document.all['heading1'].align='right';" /> <br /><br /> <input type="button" value="Bigger" οnclick=" document.all['heading1'].style.fontSize='xx-large';" /> <input type="button" value="Smaller" οnclick=" document.all['heading1'].style.fontSize='xx-small';" /> <br /><br /> <input type="button" value="Red" οnclick=" document.all['heading1'].style.color='red';" /> <input type="button" value="Blue" οnclick=" document.all['heading1'].style.color='blue';" /> <input type="button" value="Black" οnclick=" document.all['heading1'].style.color='black';" /> <br /><br /> <input type="text" name="userText" id="userText" size="30" /> <input type="button" value="Change Text" οnclick=" document.all['heading1'].innerText=document.testform.userText.value;" /> </form> </body> </html>转载于:https://www.cnblogs.com/delin/archive/2010/06/18/1759955.html
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