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分享有效性检测问题??
叶面中有 text1,submit 两个控件,如果想在提交时检测text1的数据的有效性,如果输入的值无效,则出现提示,并停止提交,能否实现?
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supersonics 2001-03-23
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<input type="submit" onClick="return isValid()">
其中isValid测试text1的合法性，合法返回true，否则返回false.
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hope it helps
其中isValid测试text1的合法性，合法返回true，否则返回false.
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hope it helps
ccwj 2001-03-23
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我也搞不懂！！
cclxj 2001-03-23
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为何加上“return”提示错误“类型不匹配”
dhwan 2001-03-23
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<html>
<script language="javascript">
<!--
function f1_onsubmit() {
if (document.forms[0].t1.value.length==0) {
alert("输入不能为空！");
return false;
}
return true;
}
-->
</script>
<body>
<form name="f1" action="xxx.asp" method="POST" onsubmit="return f1_onsubmit();">
<input type="text" name="t1">
<input type="submit" name="submit1">
</form>
</body>
</html>
<script language="javascript">
<!--
function f1_onsubmit() {
if (document.forms[0].t1.value.length==0) {
alert("输入不能为空！");
return false;
}
return true;
}
-->
</script>
<body>
<form name="f1" action="xxx.asp" method="POST" onsubmit="return f1_onsubmit();">
<input type="text" name="t1">
<input type="submit" name="submit1">
</form>
</body>
</html>
binghuodao 2001-03-23
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<html>
<script language="vbscript">
<!--
function f1_onsubmit()
if f1.t1.value = "" then
msgbox "输入不能为空！"
f1_OnSubmit = false
else
f1_OnSubmit = true
end if
end function
-->
</script>
<body>
<form name="f1" action="xxx.asp" method="POST">
<input type="text" name="t1">
<input type="submit" name="submit1">
</form>
</body>
</html>
<script language="vbscript">
<!--
function f1_onsubmit()
if f1.t1.value = "" then
msgbox "输入不能为空！"
f1_OnSubmit = false
else
f1_OnSubmit = true
end if
end function
-->
</script>
<body>
<form name="f1" action="xxx.asp" method="POST">
<input type="text" name="t1">
<input type="submit" name="submit1">
</form>
</body>
</html>
