Here is my problem, when i click the submit button, the textbox doesn't show any value
Is there any mistakes, i am just a newbie
Thank you very much
<form id="form1" name="form1" method="post" >
<p>
<input type="submit" name="setValue" id="setValue" value="submit" onclick="setValue()"/>
</p>
<p>
<label>
<input type="text" name="bbb" id="bbb" />
</label>
</p>
</form>
<script type="text/javascript">
function setValue()
{
document.getElementById('bbb').value="new value here";
}
</script>
The first issue is that you're using the same name for the element as the function, so window.setValue is not the function, but the submit button, and that's an error.
The second issue is that when you hit the submit button, the form is submitted and the page reloads, that's why you wont see a value, you have to prevent the form from submitting.
You could do it with javascript, but the easiest would be to just use a regular button instead of the submit button.
<form id="form1" name="form1" method="post">
<p>
<input type="button" name="set_Value" id="set_Value" value="submit" onclick="setValue()" />
</p>
<p>
<label>
<input type="text" name="bbb" id="bbb" />
</label>
</p>
</form>
<script type="text/javascript">
function setValue() {
document.getElementById('bbb').value = "new value here";
}
</script>
FIDDLE
I was typing the same answer what Adeneo just given, thank you Adeneo.
And user3635102, your <form> was good, you can keep it as it was. Only you need to change <input type="submit"> to <input type="button"> . if you need to submit the form in future you can update your Javascript as follows which will submit form1:
<script>
function setValue() {
document.getElementById('bbb').value = "new value here";
document.getElementById("form1").submit();
}
</script>
Related
If I have a simple html form with two submit buttons:
<form method="POST" class="submit_form main_form" action="myaction">
<input type="submit" name="goback" value="Go Back" />
<input type="submit" name="confirm" value="Confirm">
<input type="hidden" name="secret" value="hello"/>
</form>
It is possible to only post the hidden input if the "confirm" submit is clicked?
If the "goback" submit is clicked the hidden input should be ignored. I know how to accomplish this with JavaScript but was wondering if it can be done with just html.
For anyone wondering, this is how you do this in JavaScript:
<script>
var elements = document.getElementsByClassName('submit_form');
elements[0].addEventListener(
'submit',
function(event) {
if(event.explicitOriginalTarget.name === 'goback'){
var hiddenInput = document.querySelector("input[name='step']");
hiddenInput.setAttribute("disabled", "disabled");
}
}
);
</script>
You could put the buttons in 2 separate forms:
<form method="POST" class="submit_form main_form" action="myaction">
<input type="submit" name="goback" value="Go Back" />
</form>
<form method="POST" class="submit_form main_form" action="myaction">
<input type="submit" name="confirm" value="Confirm">
<input type="hidden" name="secret" value="hello"/>
</form>
That way the secret field will only be posted if the confirm button is clicked.
If you want to do it in the php code you can leave your form as is
and check if isset($_POST["confirm"]) to check if the confirm button was the one clicked.
I have 2 forms on one page.
Form 1
<form id="form1" method="get" action="action1.php">
<input type="text" id="input1">
</form>
This form is submitted by:
$('#input1').on('keydown', function(e) {
if (e.keyCode == 13) {
$('#form1').submit();
}
});
as I don't want a submit button on this form.
The 2nd form:
<form id="form2" method="post" action="action2.php">
<input type="text" id="input2">
<button type="submit">Save</button>
</form>
Now if I press the button on the 2nd form, it submits the 1st form. Not sure why that happens as the submit button is inside the second <form> tag.
Also; as form 1 will be on many pages (it's a search bar in a navigation bar) I'd like to 'future proof' this so that I don't run into problems in the future when I place multiple forms on a page. Ideally that would mean that this issue is fixed by changing form 1.
Update
Stupid mistake...! I had $('form:first').submit(); on the <button type="submit">Save</button> somewhere else in my code, so the first form got submitted...
make this change in form 2
<form id="form1" method="get" action="action1.php">
<input type="text" id="input1">
</form>
<form id="form2" method="post" action="action2.php">
<input type="text" id="input2">
<button type="submit" form="form2">Save</button>
</form>
read this to know more about form attribute
Something else is going on.
try hitting enter in these two fields - you will see there is no need for script
$("form").on("submit",function(e) {
e.preventDefault();
console.log(this.id + " submitted");
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<form id="form1" method="get" action="action1.php">
<input type="text" id="input1"> Submits on enter
</form>
<hr/>
<form id="form2" method="post" action="action2.php">
<input type="text" id="input2"> Submits on enter or on click
<button type="submit">Save</button>
</form>
I run into absolutely wierd Chrome's behavoir. Below is the code
<form method="post" id="form" accept-charset="UTF-8" action="/lalala">
<input type="submit" />
<input type="text" name="submit" value="Post this" />
</form>
<script>
setTimeout(function(){
var forma = document.getElementById("form");
console.log(forma.submit);
forma.submit();
},30000);
</script>
it prints to Chrome debug window
<input type="text" name="submit" value="Post this">
Uncaught TypeError: object is not a function
i.e. document.getElementById("form").submit is an input, but not submit callback!!
Is it possible to submit this form keeping input name=submit?
Is it possible to submit this form keeping input name=submit?
I believe, the answer is NO.
I run into absolutely wierd Chrome's behavoir.
I could find the problem in Firefox too.
The moment you use the key word submit as either the name or id of an element within a form, the form.submit turns in to an object referring the corresponding node instead of the function to submit the form.
Please refer the JSFiddle
<form method="post" id="form" accept-charset="UTF-8" action="/lalala">
<input type="submit" />
<input type="text" name="submit" value="Post this" />
</form>
var form = document.getElementById("form");
console.log(typeof form.submit);
OK I've found the solution:
<input id="submit" type="submit" />
<script>
var button = document.getElementById("submit");
button.click();
</script>
I have my HTML structure in the following format
<div>
<form class="form-inline" style="padding-top:10px" action="javascript:function()"> <!-- a search bar-->
<input id="id" type="text" " placeholder="Something">
</form>
<button onClick="somefunction()"> b</button>
</div>
the problem is I want the search bar to work when I press enter in it but unfortunately it is submitting the button element , I am slightly confused as the button is not a form element and I have specifically defined onClick. I am new to javascript so I am sure it is something small but I have not been able to solve it.
ie when I press enter , the "somefunction()" gets active as opposed to "function()"
Try this
HTML
<div>
<form class="form-inline" style="padding-top:10px" action="someFile.php" onsubmit="return someFunc();">
<input id="id" type="text" placeholder="Something">
<input type="submit" name="btn_submit" value="Submit" />
</form>
</div>
JS
function someFunc(){
// code goes here
return false;
}
Just an example.
You may put your button inside the form and have the function called in onClick return false, as discussed here.
EDIT
According to your edit and your comments on what you want, you may do the following:
<html>
<head>
<script>
function formfunction(){
alert("form function is called.");
}
function somefunction(){
alert("the button is clicked.");
}
</script>
</head>
<body>
<div>
<form name="myform" action="#" onsubmit="formfunction(); return false;">
<input id="id" type="text" placeholder="Something">
</form>
<button type="button" onClick="somefunction()"> b</button>
</form>
</div>
</body>
</html>
I'm currently working on a basic form. When you hit the submit button, it should first change the value of a field, and then submit the form as usual. It all looks a bit like this:
<form name="myform" id="myform" action="action.php">
<input type="hidden" name="myinput" value="0" />
<input type="text" name="message" value="" />
<input type="submit" name="submit" onclick="DoSubmit()" />
</form>
And this is how far I've come with the JavaScript code. It changes "myinput"'s value to 1, but it does not submit the form.
function DoSubmit(){
document.myform.myinput.value = '1';
document.getElementById("myform").submit();
}
You could do something like this instead:
<form name="myform" action="action.php" onsubmit="DoSubmit();">
<input type="hidden" name="myinput" value="0" />
<input type="text" name="message" value="" />
<input type="submit" name="submit" />
</form>
And then modify your DoSubmit function to just return true, indicating that "it's OK, now you can submit the form" to the browser:
function DoSubmit(){
document.myform.myinput.value = '1';
return true;
}
I'd also be wary of using onclick events on a submit button; the order of events isn't immediately obvious, and your callback won't get called if the user submits by, for example, hitting return in a textbox.
document.getElementById("myform").submit();
This won't work as your form tag doesn't have an id.
Change it like this and it should work:
<form name="myform" id="myform" action="action.php">
Here is simple code. You must set an id for your input. Here call it 'myInput':
var myform = document.getElementById('myform');
myform.onsubmit = function(){
document.getElementById('myInput').value = '1';
myform.submit();
};
No. When your input type is submit, you should have an onsubmit event declared in the markup and then do the changes you want. Meaning, have an onsubmit defined in your form tag.
Otherwise change the input type to a button and then define an onclick event for that button.
You're trying to access an element based on the name attribute which works for postbacks to the server, but JavaScript responds to the id attribute. Add an id with the same value as name and all should work fine.
<form name="myform" id="myform" action="action.php">
<input type="hidden" name="myinput" id="myinput" value="0" />
<input type="text" name="message" id="message" value="" />
<input type="submit" name="submit" id="submit" onclick="DoSubmit()" />
</form>
function DoSubmit(){
document.getElementById("myinput").value = '1';
return true;
}
My problem turned out to be that I was assigning as document.getElementById("myinput").Value = '1';
Notice the capital V in Value? Once I changed it to small case, i.e., value, the data started posting. Odd as it was not giving any JavaScript errors either.
I have done this and it works for me.
At first you must add a script such as my SetHolderParent() and call in the html code like below.
function SetHolderParent(value) {
alert(value);
}
<input type="submit" value="Submit" onclick="SetHolderParent(222);" />
You can use the onchange event:
<form name="myform" id="myform" action="action.php">
<input type="hidden" name="myinput" value="0" onchange="this.form.submit()"/>
<input type="text" name="message" value="" />
<input type="submit" name="submit" onclick="DoSubmit()" />
</form>
This might help you.
Your HTML
<form id="myform" action="action.php">
<input type="hidden" name="myinput" value="0" />
<input type="text" name="message" value="" />
<input type="submit" name="submit" onclick="save()" />
</form>
Your Script
<script>
function save(){
$('#myinput').val('1');
$('#form').submit();
}
</script>