å®ä¹ä¸ä¸ªå½æ°ï¼è®¾ç½®è¾å
¥æ¡onfocusäºä»¶ï¼è°ç¨è¿ä¸ªå½æ°ãå½æ°çç¨å¤æ¯å°è¾å
¥æ¡çvalueå¼è®¾ç½®ä¸ºç©ºã
代ç 大è´å¦ä¸ï¼
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<script>
function xiaoshi(){
var obj=document.getElementById("text1");
obj.setAttribute("value",""); //è¿å¥æ¯å ³é®
}
</script>
</head>
<body>
<form>
<input type="text" id="text1" value="è¿éæ¯ææ¬æ¡" onfocus="xiaoshi()"/>
</form>
</body>
</html>
代ç 大è´å¦ä¸ï¼
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<script>
function xiaoshi(){
var obj=document.getElementById("text1");
obj.setAttribute("value",""); //è¿å¥æ¯å ³é®
}
</script>
</head>
<body>
<form>
<input type="text" id="text1" value="è¿éæ¯ææ¬æ¡" onfocus="xiaoshi()"/>
</form>
</body>
</html>
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