帮我看下下面的代码
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<script>
function aa(){
document.getElementById("textfield").value="";
document.getElementById("textfield").maxlength=3;
alert(document.getElementById("textfield").maxlength);
}
</script>
</HEAD> <BODY>
<input type="text" maxlength=2 id="textfield" style="">
<input type="button" name="txtfield" onclick="aa();" value="改变输入长度">
</BODY>
</HTML>想改变下maxlength的长度。就是比如默认可以输入2个字符,点按钮后它就可以输入3个字符,请问怎么实现?高手们,帮忙啊
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<script>
function aa(){
document.getElementById("textfield").value="";
document.getElementById("textfield").maxlength=3;
alert(document.getElementById("textfield").maxlength);
}
</script>
</HEAD> <BODY>
<input type="text" maxlength=2 id="textfield" style="">
<input type="button" name="txtfield" onclick="aa();" value="改变输入长度">
</BODY>
</HTML>想改变下maxlength的长度。就是比如默认可以输入2个字符,点按钮后它就可以输入3个字符,请问怎么实现?高手们,帮忙啊
<HTML>
<HEAD>
<script>
function aa(){
document.getElementById("textfield").value="";
document.getElementById("textfield").maxLength=3;
alert(document.getElementById("textfield").maxLength);
}
</script>
</HEAD> <BODY>
<input type="text" maxlength=2 id="textfield" style="">
<input type="button" name="txtfield" onclick="aa();" value="改变输入长度">
</BODY>
</HTML>
document.getElementById("textfield").maxLength=3;