For a simple form with an alert that asks if fields were filled out correctly, I need a function that does this:
Shows an alert box when button is clicked with two options:
If "OK" is clicked, the form is submitted
If cancel is clicked, the alert box closes and the form can be adjusted and resubmitted
I think a JavaScript confirm would work but I can't seem to figure out how.
The code I have now is:
function show_alert() {
alert("xxxxxx");
}
<form>
<input type="image" src="xxx" border="0" name="submit" onclick="show_alert();" alt="PayPal - The safer, easier way to pay online!" value="Submit">
</form>
A simple inline JavaScript confirm would suffice:
<form onsubmit="return confirm('Do you really want to submit the form?');">
No need for an external function unless you are doing validation, which you can do something like this:
<script>
function validate(form) {
// validation code here ...
if(!valid) {
alert('Please correct the errors in the form!');
return false;
}
else {
return confirm('Do you really want to submit the form?');
}
}
</script>
<form onsubmit="return validate(this);">
You could use the JS confirm function.
<form onSubmit="if(!confirm('Is the form filled out correctly?')){return false;}">
<input type="submit" />
</form>
http://jsfiddle.net/jasongennaro/DBHEz/
function show_alert() {
if(!confirm("Do you really want to do this?")) {
return false;
}
this.form.submit();
}
Simple and easy :
<form onSubmit="return confirm('Do you want to submit?') ">
<input type="submit" />
</form>
OK, just change your code to something like this:
<script>
function submit() {
return confirm('Do you really want to submit the form?');
}
</script>
<form onsubmit="return submit(this);">
<input type="image" src="xxx" border="0" name="submit" onclick="show_alert();"
alt="PayPal - The safer, easier way to pay online!" value="Submit">
</form>
Also this is the code in run, just I make it easier to see how it works, just run the code below to see the result:
function submitForm() {
return confirm('Do you really want to submit the form?');
}
<form onsubmit="return submitForm(this);">
<input type="text" border="0" name="submit" />
<button value="submit">submit</button>
</form>
If you want to apply some condition on form submit then you can use this method
<form onsubmit="return checkEmpData();" method="post" action="process.html">
<input type="text" border="0" name="submit" />
<button value="submit">submit</button>
</form>
One thing always keep in mind that method and action attribute write after onsubmit attributes
javascript code
function checkEmpData()
{
var a = 0;
if(a != 0)
{
return confirm("Do you want to generate attendance?");
}
else
{
alert('Please Select Employee First');
return false;
}
}
Related
I have created a form in HTML and have use onblur event on each and every field and it is working very fine. The problem is when i click on submit button(which will send data to a servlet) the data is submitted even if it is invalid. Here is an example.
<html>
<head>
<script>
function check()
{
if(checkName()==true)
return true;
else{
alert('vhvh');
return false;
}
}
function checkName()
{
var uname=document.enq.Name.value;
var letters = /^[A-Za-z, ]+$/;
if(uname.match(letters))
{
document.getElementById('Name').style.borderColor = "black";
return true;
}
else
{
document.getElementById('Name').style.borderColor = "red";
//alert('Username must have alphabet characters only');
//uname.focus();
return false;
}
}
</script>
</head>
<body>
<form name="enq" method="post" action="Enquiry" onsubmit="check()">
<input class="textbox" id="Name"style="margin-top:10px;font-size:16px;" type="text" name="Name" placeholder="Full Name" onblur="checkName()" required /><br><br>
<input class="button" type="submit">
</form>
</body>
</html>
How can i resolve this issue?
use
<input class="button" type="button">
and put a onclick event like this:
<input class="button" type="button" onclick="this.submit()">
so you can manipulate data before you subimit it.
There is an "onsubmit" event that allows you to control form submission. Use it to call your validation functions, and only then decide if you want to allow the user to submit the form.
http://www.htmlcodetutorial.com/forms/_FORM_onSubmit.html
You have to use it in the following way if you want it to prevent the form submission:
<form onsubmit="return check()">
I am trying to get a function to print out whatever the user inputs into the text-box. I am using onClick as an attribute on my submit button. I know I set it up properly because it flickers the answer, but only for a split second. How can I get the input to stay on the page? Here's the code: HTML: Type what you want to post to the website!
HTML:
<div id="main_div">
<section id="leftbox">
<form name="mybox">
Type what you want to post to the website!:
<br />
<input type="textbox" size="15" maxlength="15" name="text" id="text">
<br />
<input type="submit" value="Submit!" onClick="doFirst()">
</form>
</section>
</div>
<div id="insert"></div>
Javascript:
function doFirst(){
text = document.getElementById('text');
insert = document.getElementById('insert');
if(text.value == "")
{
insert.innerHTML = "Please input something!";
return false;
}
else
{
insert.innerHTML = text.value;
}
}
try this:
Using type=button
<input type="button" value="Submit!" onClick="doFirst()">
OR using type=submit
<form name="mybox" onsubmit="doFirst(); return false;">
<input type="submit" value="Submit!">
</form>
Explain:
The action for onclick in submit button DO executed. You keep see the page does not have any changes, because of there are a FORM. And the key point: the form handle the submit action after the JS function doFirst() immediately. Adding the onsubmit in the form with return false to stop default action, means:
<form name="mybox" onsubmit="return false;">
<input type="button" value="Submit!" onClick="doFirst()">
</form>
To simplify the changes, use button instead of submit type, or using onsubmit instead of onclick in form trigger.
onClick="doFirst()"
gets converted into an anonymous function:
function(){ doFirst() }
and whatever that function returns determines if the submit should be completed or aborted, so you should use:
onClick="return doFirst();"
In other words, it's not enough that doFirst return something, whatever doFirst returns should be returned again inside the onClick.
please can someone help. this form validation is not triggering.. It's really frustrating me. I'm a PHP developer rather than JS so i'm struggling a bit with this even though it's clearly something very simple. I'm just trying to validate the form based on the delete box being ticked.
Nothing appears when I click submit. It just submits the form so it must be returning true.
function deleteVal(chk) {
var chk;
// If the checkbox has been set to delete
if (chk.checked == "delete") {
var ok=confirm("You are about to delete the selected images below.\nAre you sure you want to do this?");
if (ok) {
// Submit
return true;
} else {
// Don't submit
return false;
}
}
// Delete box was not ticked so return true and submit form
return true;
}
</script>
<form action="" method="POST" onSubmit="return deleteVal(delete)">
<label>Delete images?</label><input type="checkbox" name="delete" value="delete" />
<input type="submit" name="submit" value="Submit" />
</form>
You need to get the checked value properly like so and see if it is true or false.
var chk = document.getElementById('delete');
// If the checkbox is checked
if (chk.checked == true) {
Then you do not need to pass a variable to the function, however, you do need to give you checkbox an id.
<form action="" method="POST" onSubmit="return deleteVal();">
<input type="checkbox" name="delete" id="delete"/>
<input type="submit" name="submit" value="Submit" />
</form>
Tested code - http://pastebin.com/FdWdeSCN
Hi i have have this form that i do no want to perform an action when the submit button is clicked. All i want to do is perform the a function that loads data into a div. Any Ideas??
<form method="POST" action="" id="search-form">
<input type="text" name="keywords" />
<input type="submit" value="Search" id="sButton" onclick="loadXMLDoc('file.xml')" />
</form>
onclick="loadXMLDoc('file.xml'); return false;"
or even better:
<script>
window.onload = function() {
document.getElementById("search-form").onsubmit = function() {
loadXMLDoc('file.xml');
return false;
};
};
</script>
To implement loadXMLDoc, you can use the ajax module in jQuery. for example:
function loadXMLDoc() {
$("div").load("file.xml");
}
Final code using jQuery:
<script>
$(function() {
$("#search-form").submit(function() {
$("div").load("file.xml");
return false;
});
});
</script>
I think you need ajax function to load data with in div without page reload
Change input type submit to button
<input type="button" value="Search" id="sButton" onclick="AjaxSend()" />
Ajax CAll:
<script type="text/javascript">
function AjaxSend(){
$.get('file.xml', function(data) {
$('div').html(data);
});
}
</script>
use prevent defaults to avoid form action.please refer the code below it might help you
function createRecord(){
event.preventDefault();
}
<form>
<input type="text"/>
<input type="submit" onclick="createRecord()"/>
</form>
just remove action param from form and add onsubmit="return false". It will return false everytime you click on any button in your form.
Try like this:
<form method="POST" onsubmit="return false" id="search-form">
<input type="text" name="keywords" />
<input type="submit" value="Search" id="sButton" onclick="loadXMLDoc('file.xml')" />
</form>
i have a form which has a button that submits the form. I need to do something before submits happen. I tried doing onClick on that button but it happens after the submit.
I can't share the code but, generally, what should I do in jQuery or JS to handle this?
If you have a form as such:
<form id="myform">
...
</form>
You can use the following jQuery code to do something before the form is submitted:
$('#myform').submit(function() {
// DO STUFF...
return true; // return false to cancel form action
});
Update; for newer JQuery versions (to avoid deprecation warnings), try:
$('#myform').on('submit', function() {
// ...
return true;
});
Assuming you have a form like this:
<form id="myForm" action="foo.php" method="post">
<input type="text" value="" />
<input type="submit" value="submit form" />
</form>
You can attach a onsubmit-event with jQuery like this:
$('#myForm').submit(function() {
alert('Handler for .submit() called.');
return false;
});
If you return false the form won't be submitted after the function, if you return true or nothing it will submit as usual.
See the jQuery documentation for more info.
You can use onclick to run some JavaScript or jQuery code before submitting the form like this:
<script type="text/javascript">
beforeSubmit = function(){
if (1 == 1){
//your before submit logic
}
$("#formid").submit();
}
</script>
<input type="button" value="Click" onclick="beforeSubmit();" />
make sure the submit button is not of type "submit", make it a button. Then use the onclick event to trigger some javascript. There you can do whatever you want before you actually post your data.
Form:
<form id="formId" action="/" method="POST" onsubmit="prepareForm()">
<input type="text" value="" />
<input type="submit" value="Submit" />
</form>
Javascript file:
function prepareForm(event) {
event.preventDefault();
// Do something you need
document.getElementById("formId").requestSubmit();
}
Note: If you're supporting Safari (which you probably are) you'll need to pull in a polyfill for requestSubmit()