[英]multiple function not working for onsubmit
My form is validating the two java functions script and if both are true it will continue the form submit. 我的表单正在验证两个Java函数脚本,如果两个都正确,它将继续表单提交。 But when i submit it validates only first function validateFormROLLNO() not the second function.
但是,当我提交时,它仅验证第一个函数validateFormROLLNO()而不验证第二个函数。 Also, when the first function fails it submits the form anyway.
同样,当第一个函数失败时,它将仍然提交表单。 I want to submit the form only when the two functions are passed.
我只想在两个函数都通过时才提交表单。
first function will check if the roll no = 12 characters. 第一个功能将检查滚动编号是否为12个字符。 second function checks if the name is not null.
第二个函数检查名称是否不为null。
<body>
<center>
<script type="text/javascript">
function validateFormROLLNO() {
var x = document.forms["myForm"]["id"].value;
if (x !=12) {
alert("ROLLNO must be 12 characters long!!!!");
return false;
}
document.forms["myForm"]["submit"].disabled = true;
document.forms["myForm"]["submit"].value="Wait..";
}
function validateFormNAME() {
var p = document.forms["myForm"]["student"].value;
if (p =='') {
alert("Name cannot be NULL!!!!");
return false;
}
document.forms["myForm"]["submit"].disabled = true;
document.forms["myForm"]["submit"].value="Wait..";
} }
function validate(){
return validateFormROLLNO() && validateFormNAME();
}
</script>
<br> <FORM name="myForm" ACTION="insert.jsp" onsubmit="return validate()" METHOD="POST">
Please enter the Rollno and Name you want to INSERT:
<BR> <br>
<b>ISIN :<INPUT TYPE="TEXT" NAME="id"></b>
<BR><BR>
<b> SOURCE :<INPUT TYPE="TEXT" NAME="student"></b>
<br><BR>
<INPUT TYPE="SUBMIT" value="Submit">
</FORM>
</center>
</body>
</html>
There might be some javascript errors exists on the page, that don't let second function to execute. 页面上可能存在一些javascript错误,这些错误不允许第二个函数执行。 Please use browser's inspect element to explore it.
请使用浏览器的inspect元素进行浏览。
document.forms["myForm"]["id"].value you are are checking value of the textbox. document.forms [“ myForm”] [“ id”]。value您正在检查文本框的值。 Please document.forms["myForm"]["id"].value.length to validate it.
请document.forms [“ myForm”] [“ id”]。value.length进行验证。
Here is the complete method. 这是完整的方法。
function validateFormROLLNO() {
var x = document.forms["myForm"]["id"].value;
if (x.length <12) {
alert("ROLLNO must be 12 characters long!!!!");
return false;
}
else
return true;
document.forms["myForm"]["submit"].disabled = true;
document.forms["myForm"]["submit"].value="Wait..";
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.