|
<input type="submit" name="Submit2" value="提交" onclick="return tijiao()" />
<script language="javascript">
function tijiao(){
var user
var pass
user=document.getElementById("username").value
pass=document.getElementById("password").value
if (user=="" || pass==""){
alert("用户名和密码都不能为空")
return false
}else {
alert("成功") }
}
</script>
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