HTML DOM alt ÊôÐÔ
¶¨ÒåºÍÓ÷¨
alt ÊôÐÔ¿ÉÉèÖûò·µ»ØÔÚä¯ÀÀÆ÷²»Ö§³ÖÖØÖð´Å¥Ê±ÏÔʾµÄÌæ´úÎı¾¡£
Óï·¨
resetObject.alt=alternate_text
ʵÀý
ÏÂÃæµÄÀý×Ó¿É·µ»ØÖØÖð´Å¥µÄ alt Îı¾£º
<html>
<body>
<form>
<input type="reset" alt="Reset button" id="reset1" />
</form>
<p>The alt text for the reset button is:
<script type="text/javascript">
x=document.getElementById('reset1');
document.write(x.alt
);
</script></p>
</body>
</html>