javascript当中Element如何用 getAttribute和 setAttribute
javascript当中Element如何用 getAttribute和 setAttribute
例 3.2
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<SCRIPT LANGUAGE="JavaScript">
<!--
function fun()
{
var ele = document.getElementById("txt")
/*Element.getAttribute() (Method)
An accessor for reading named custom attributes.
Property/method value type: String primitive
JavaScript syntax: - myElement.getAttribute(anAttribName)
*/
var v = ele.getAttribute("value");
var nq = ele.getAttribute("NAME");
var tp = ele.getAttribute("type");
var qn = ele.getAttribute("qixyNewAttribute");
alert(v+nq+tp+qn);
}
function fun2()
{
var ele = document.getElementById("txt")
alert(ele.getAttribute("value"));//马克-to-win：这样不能把input中实时的值取回来，getAttribute只能取初值，或setAttribute设置的值
ele.setAttribute("value",ele.getAttribute("value")+"111");
alert(ele.getAttribute("value"));
ele.setAttribute("value",ele.value);//这样才能把input中实时的值取回来，getAttribute只能取初值，或setAttribute设置的值。
alert(ele.getAttribute("value"));
ele.setAttribute("qixyNewAttribute",ele.getAttribute("value"));
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<INPUT TYPE="text" id="txt" NAME="nameq" value="please input新中文" ><P>
<INPUT TYPE="button" value="getAttribute测试" οnclick="fun()">
<INPUT TYPE="button" value="setAttribute测试" οnclick="fun2()">
</BODY>
</HTML>
更多请见：https://blog.csdn.net/qq_43650923/article/details/103050984
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如有侵权，请联系 cloudcommunity@tencent.com 删除。
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