All,
I can reset all my form elements using the following JQuery Syntax:
('#myform')[0].reset();
How can I modify this to exclude the reset of "select box" values?
Thanks
To everyone..
the reset function does not set everything to '' (empty string)
it reset to their initial values .. (stored in the value attribute, or selected option etc..)
If you want to maintain the default reset features then you should
get all the <select> elements
get their currently selected values
reset the form as you currently do
re-set the selected
example:
<script type="text/javascript">
$(document).ready(
function(){
$("#resetbutton").click(
function(){
var values = [];
var selected = $("select").each(
function(){
values.push( $(this).val());
});
this.form.reset();
for (i=0;i<selected.length;i++)
$(selected[i]).val(values[i]);
});
}
);
</script>
That's not jQuery, it's native javascript. [0] brings out the actual DOM element, so it's the same as:
document.getElementById('myform').reset();
reset() is a built-in browser implementation that resets the entire form. If you need to reset individual form types, try something like:
$('#myform :text').val('');
You can see all form selectors here: http://docs.jquery.com/Selectors
You can do a fake reset by setting the values to an empty string and resetting the checkboxes using David's answer (or this more complete one). You could also try storing each select element's value before resetting the form and then restore the values after:
var myform = $('#myform');
var selects = $('select', myform);
// Store each current value
selects.each(function() {
$(this).data('previous', $(this).val());
});
myform[0].reset();
// Restore the values
selects.each(function() {
$(this).val($(this).data('previous'));
});
For whatever reason, David's right-on answer error'd my Google Chrome js. It's saying:
Uncaught TypeError: Property 'reset' of object # is not a function
...so I decided to try a slightly different solution:
Give native browser reset buttons attributes "hidden" and set "id":
<input id="resetbutton" type="reset" style="visibility:hidden;" name="reset" value="reset" />
Initiate JQuery "click" event on reset button from clicking link:
Reset
Related
The issue is when I attempt to resubmit a form without refreshing the page the event handler for the form submission retains the value for the previous submission.
The form contains a select element that is populated with options from an API. The selected option is used to make a request URL and get data from the API. When the form is submitted a second time without refreshing the form. Submit event handler constructs a URL with the previous value and then it constructs a URL with the newly selected value. I have tried to a reset on the form which does reset the select element to its initial state but it does not clear the previously selected value from the submit event handler.
<form id="myform">
<label for="input">Select dog breed!<label>
<select class="breeds"></select>
<input type="submit" value="Enter">
</form>
let $select = $(".breeds");
$select.append($(`<option>select breed</option>`))
for (var i=0; i<=breeds.length; i++){
$select.append($(`<option></option>`).text(breeds[i]).html(breeds[i]))
}
$('.breeds').on('change', function(){
console.log('on change running')
let breed = $(".breeds :selected").text()
console.log(`breed in on change: ${breed}`)
watchForm(breed)
})
function watchForm(breed) {
console.log(`watchForm running`)
console.log(`breed in watchform is: ${breed}`) //here breed logs as the value for first submission and then the second submission
$('form').submit(event => {
console.log(`breed in form submit is ${breed}`)
event.preventDefault();
//console.log(`num is ${num}`)
getDogImage(breed);
$('#myform').get(0).reset()
});
}
Best and simple solution ever
Use trigger()
$('#myform').trigger("reset");
You're good to go!!
You can use something like that. $('myform').val('');
Jquery selector can return one or more element, so it returns an array.
Since reset() is a Javascript function and we are forcefully using it in jquery, it requires a specific element to perform reset action.
$('#myform')[0].reset()
Using vanilla Javascript is the easiest and simplest one because id is unique in a HTML document.
document.getElementById("myForm").reset();
I have a a reasonably quick problem to solve (I think). I have a form online and it validates the required content for the user's data, but has no validation on the first part of the form.
I've been asked however if I can make a radio button REQUIRED depending on whether an input field has been filled in.
The form can be found here:
http://www.elcorteingles.pt/reservas/livros_escolares/form.asp
So if the person start's filling in the input fields on the first line, that the radio buttons in the group become REQUIRED (for either the CDROM ou CADERNO but not both)
You can handle the focusout and blur events for the input:
$(function () {
// Handle every input type text.
// To select specific inputs, give them a common class and change the
// selector accordingly.
$("input[type=text]").on("focusout blur", function () {
// Check for inputs with class radio_btns which are in
// the parent element (li).
// Set their required property.
$(this).parent().find("input.radio_btns")
.prop("required", $(this).val().trim().length > 0);
});
});
Demo
jQuery reference (Tree Traversal)
jQuery reference (.prop())
jQuery reference (.focusout())
jQuery reference (.blur())
This will work. You can include the following JQuery code in the script tag, and also the JQuery cdn link in the head tag.
$(document).ready(function(){
$('#01titulo').focusout(function(){
if ($(this).val() !== "") {
$('[name="01caderno"]').prop('required', true);
} else {
$('[name="01caderno"]').prop('required', false);
}
alert($('[name="01caderno"]').attr('required'));
});
});
Try using the following js code its working:
$(document).ready(function(){
$(".titulo_books").each(function(){
$(this).focus(function(){
var radioChecked=0;
var currElemId = parseInt($(this).attr('id'));
var radioSelecterId = (currElemId>9) ? currElemId : "0"+currElemId;
$("input:radio[name="+radioSelecterId+"caderno]").each(function(){
if(radioChecked==0)
{
radioChecked==1;
$(this).attr("checked","checked");
}
});
});
});
});
I have checked it by executing this from console on your site and it seems to work fine. You can alter this in the way you want. I have checked one of the four available radio button. User can change the input value if required. Or you can also change the default radio button selected through my code.
I am using this relatively simple JS program:
http://www.barelyfitz.com/webdesign/articles/filterlist/
The program just filters a select box using a text box.
However, I want to jquery and HTML5 data attribute which is different how it was originally used. I give my text box filterer a data attribute:
<input id="filter_text" name="filter_text" data-filterable="myselect"
type="text" />
I use the following jquery to get the name of the select box that is to be filtered and then filter the select box:
$(function() {
$('input[data-filterable]').keyup(function() {
select_box_name = $($(this).data('filterable'))[0];
filter = new filterlist(select_box_name);
filter.set(this.value);
});
});
which NEARLY works. You can filter but if you press backspace to de-filter then nothing happens i.e. it doesn't 'unfilter'.
It must be something really small!!
Thank you :).
You need to initialize the filter outside the event handler:
$(function() {
$("input['data-filterable']").each(function() {
var filter = new filterlist($($(this).data('filterable'))[0]);
$(this).keyup(function() {
filter.set(this.value);
);
});
});
On every keyup you're reinitializing filter. So you can only filter on the select as it is right when you press a key. Move the initialization of the filter out of the keyup event and it's working.
Here's a fiddle.
I have a bunch of inputs, i'd like to call reset but there are all outside of a form. I tried calling reset on input and textarea with no luck.
Is there a similar function i can use?
Keep in mind that the form RESET actually doesn't clear all fields, it will reset a form's default values back to default as well, so a better approach might be the following:
$('#the_form').trigger('reset');
Perhaps another approach:
// capture all existing values
var arr = [];
$(':input').each(function(i, e)
{
arr.push($(e).val());
});
// custom function to reset all values to initially captured values
function my_reset()
{
$(':input').each(function(i, e)
{
$(e).val(arr[i]);
});
}
The above approach blindly targets all fields, if you have a way to better target them, you should definitely use what you can.
Additionally, this approach stores all the fields in order, so if you have dynamically generated fields, then this solution would have to be revised.
My approach (second to putting them in a form...) would be to, onload, map the default values to each input id or name, and then create a reset method that just iterates that collection, get by id and set to default...
Do you want to reset or just to clear the inputs?
Reset would be more complicated, but clearing in your case is easy:
HTML:
<input type="text"/>
<textarea></textarea>
<button id="resetBtn">Reset</button>
JS:
$("#resetBtn").click(function(){
$("input, textarea").val("");
});
I need to clear the default values from input fields using js, but all of my attempts so far have failed to target and clear the fields. I was hoping to use onSubmit to excute a function to clear all default values (if the user has not changed them) before the form is submitted.
<form method='get' class='custom_search widget custom_search_custom_fields__search' onSubmit='clearDefaults' action='http://www.example.com' >
<input name='cs-Price-2' id='cs-Price-2' class='short_form' value='Min. Price' />
<input name='cs-Price-3' id='cs-Price-3' class='short_form' value='Max Price' />
<input type='submit' name='search' class='formbutton' value=''/>
</form>
How would you accomplish this?
Read the ids+values of all your fields when the page first loads (using something like jquery to get all "textarea", "input" and "select" tags for example)
On submit, compare the now contained values to what you stored on loading the page
Replace the ones that have not changed with empty values
If it's still unclear, describe where you're getting stuck and I'll describe more in depth.
Edit: Adding some code, using jQuery. It's only for the textarea-tag and it doesn't respond to the actual events, but hopefully it explains the idea further:
// Keep default values here
var defaults = {};
// Run something like this on load
$('textarea').each(function(i, e) {
defaults[$(e).attr('id')] = $(e).text();
});
// Run something like this before submit
$('textarea').each(function(i, e){
if (defaults[$(e).attr('id')] === $(e).text())
$(e).text('');
})
Edit: Adding some more code for more detailed help. This should be somewhat complete code (with a quality disclaimer since I'm by no means a jQuery expert) and just requires to be included on your page. Nothing else has to be done, except giving all your input tags unique ids and type="text" (but they should have that anyway):
$(document).ready(function(){
// Default values will live here
var defaults = {};
// This reads and stores all text input defaults for later use
$('input[type=text]').each(function(){
defaults[$(this).attr('id')] = $(this).text();
});
// For each of your submit buttons,
// add an event handler for the submit event
// that finds all text inputs and clears the ones not changed
$('input[type=submit]').each(function(){
$(this).submit(function(){
$('input[type=text]').each(function(){
if (defaults[$(this).attr('id')] === $(this).text())
$(this).text('');
});
});
});
});
If this still doesn't make any sense, you should read some tutorials about jQuery and/or javascript.
Note: This is currently only supported in Google Chrome and Safari. I do not expect this to be a satisfactory answer to your problem, but I think it should be noted how this problem can be tackled in HTML 5.
HTML 5 introduced the placeholder attribute, which does not get submitted unless it was replaced:
<form>
<input name="q" placeholder="Search Bookmarks and History">
<input type="submit" value="Search">
</form>
Further reading:
DiveintoHTML5.ep.io: Live Example... And checking if the placeholder tag is supported
DiveintoHTML5.ep.io: Placeholder text
1) Instead of checking for changes on the client side you can check for the changes on the client side.
In the Page_Init function you will have values stored in the viewstate & the values in the text fields or whichever controls you are using.
You can compare the values and if they are not equal then set the Text to blank.
2) May I ask, what functionality are you trying to achieve ?
U can achieve it by using this in your submit function
function clearDefaults()
{
if(document.getElementById('cs-Price-2').value=="Min. Price")
{
document.getElementById('cs-Price-2').value='';
}
}