<script language="javascript">
function check()
{
if(form1.text1.value=="")
{
alert("不能为空");
form1.text1.focus();
return false;
}
}
</script>
<form name=form1 onsubmit="return check();">
<input type=text name=text1 >
<input type=submit>
</form>
function check()
{
if(form1.text1.value=="")
{
alert("不能为空");
form1.text1.focus();
return false;
}
}
</script>
<form name=form1 onsubmit="return check();">
<input type=text name=text1 >
<input type=submit>
</form>
我有很多text怎么办?
<input type="text" name="txt">111111111<br>
<input type="text" name="txt">222222222<br>
<input type="text" name="txt">333333333<br>
<input type="text" name="txt">444444444<br>
<input type="text" name="txt">555555555<br>
<input type="text" name="txt">666666666<br>
<input type="text" name="txt">777777777<br>
<input type="text" name="txt">888888888<br>
<input type="text" name="txt">999999999<br>
<input type="text" name="txt">000000000<br>
<input type="submit">
</form>
<SCRIPT LANGUAGE="JavaScript">
<!--
function checkForm() {
for(i=0;i<frm1.txt.length;i++) {
if(frm1.txt[i].value=="") {
alert("没填!");
frm1.txt[i].focus();
return false;
}
}
}
//-->
</SCRIPT>
{
if(from1.text1.value.length == 0)
{
alert('不能为空!');
form1.text1.focus();
return false;
}
}