Develop Reference

Ajax / Javascript - Remove Links After 1 Link Has Been Clicked

I have the following script which fetches data (branch names) asynchronously via database:
$(document).ready(function () {
$("#pickup").on('keyup',function () {
var key = $(this).val();
$.ajax({
url:'modal/fetch_branch.php',
type:'GET',
data:'keyword='+key,
beforeSend:function () {
$("#results").slideUp('fast');
},
success:function (data) {
$("#results").html(data);
$("#results").slideDown('fast');
// use `on` as elements are added dynamically
$( "#results" ).on("click", "a", function() {
// take `text` of a clicked element and set it as `#pickup` value
$( "#pickup" ).val( $( this ).text() );
// return false to prevent default action
return false;
});
}
});
});
});
HTML
<input type="text" class="form-control empty" name="keyword" id="pickup" placeholder=""/>
Everything is working perfectly, When user clicks link the data (branch name) gets added to the text input field, which is exactly what needs to happen, however...
My Problem
After user has clicked on desired link (branch name) I need the remaining links (data / branch names) to get removed...
As can be seen from above image Stellenbosch was selected, thus I need the other links to get removed...
Any advice how I can achieve the following greatly appreciated.
UPDATE
Here is the fetch_branch.php file as requested:
if(mysqli_num_rows($result) < 1 ) // so if we have 0 records acc. to keyword display no records found
{
echo '<div id="item">Ah snap...! No results found :/</div>';
} else {
while ($row = mysqli_fetch_array($result)) //outputs the records
{
$branch = $row['location'];
echo '<a style="cursor:pointer">'.$brach.'</a>';
echo'<br />';
}//while
}//else
}//if

I'm making a different assumption from the other answers here, because I can't understand why you'd want to remove the other links in the dropdown, after clicking one!
As can be seen from above image Stellenbosch was selected, thus I need the other links to get removed...
If that is indeed the case, you'll want to accept #acontell's answer.
However, if you'd like the clicked link to disappear from your list, you might try something like this in the click handler:
$("#results").on("click", "a", function() {
$this = $(this);
$("#pickup").val($this.text());
// Remove the linebreaks output by modal/fetch_branch.php
$this.next('br').remove();
// Remove the clicked <a> tag itself
$this.remove();
// return false to prevent default action
return false;
});
In case you'd like the whole dropdown to disappear when clicked, do this: (which, I think is common, no?)
$("#results").on("click", "a", function() {
$("#pickup").val($(this).text());
$("#results").slideUp();
return false;
});

try $(this).siblings().remove(); inside your click event. so your function should look like this,
$(document).ready(function () {
$("#pickup").on('keyup',function () {
var key = $(this).val();
$.ajax({
url:'modal/fetch_branch.php',
type:'GET',
data:'keyword='+key,
beforeSend:function () {
$("#results").slideUp('fast');
},
success:function (data) {
$("#results").html(data);
$("#results").slideDown('fast');
// use `on` as elements are added dynamically
$( "#results" ).on("click", "a", function() {
// take `text` of a clicked element and set it as `#pickup` value
$( "#pickup" ).val( $( this ).text() );
//------------------
//only this line is newly added
//------------------
$(this).siblings().remove();
//------------------
// return false to prevent default action
return false;
});
}
});
});
});

After selecting the item and setting the text to input add the following code snippet
$(this).siblings().remove();
This removes all the sibling li s of the selected item
or
$( "#results a" ).not(this).remove();

If I'm not mistaken, I think it could be done with a little modification to your code:
...
success:function (data) {
$("#results").html(data);
$("#results").slideDown('fast');
// use `on` as elements are added dynamically
$( "#results" ).on("click", "a", function() {
// take `text` of a clicked element and set it as `#pickup` value
$( "#pickup" ).val( $( this ).text() );
// --MODIFICATION-- Remove all elements except this.
$("#results").html(this);
// return false to prevent default action
return false;
});
}
...
The idea is to substitute the html of the link container (it contains all the links) with the HTML of the clicked link. In essence, it will remove all and leave only the clicked one.
Here's a fiddle (without AJAX) that represents the idea. Hope it helps.

Please check this link for a working demo. Click Here
I used dummy data and use changed keyup event to focus for testing you can modify it more (if this helps).
I hope this will help you.
Thanks,

I don't understand you. However, if you mean hide result after link clicked, you can use
$("#results").slideUp('fast');
within onclick event.
Also you can remove other links and live clicked.
$("#results").on("click", "a", function() {
$("#pickup" ).val($(this).text());
$(this).addClass('selected');
$("#results a:not(.selected)").remove();
$(this).removeClass('selected');
return false;
});

Javascript for each textbox depend on drop down list

I make input form using static row in 7 rows. How can I get selected value in each textbox when drop down list selected? I tried to use jQuery to do it, but my code is getting error (all textbox changed). So, below is my jQuery code:
<script>
$(document).ready(function() {
$('[name="nm_pot_part_shortage[]"]').on('change', function() {
$('[name="nm_maker[]"]').val($(this).val());
});
});
</script>
Image of my form:

You must escape bracket notation by using double slashes for selector having name like $('[name="nm_pot_part_shortage\\[\\]"]'), otherwise you will get an error, see following code :
$( '[name=nm_pot_part_shortage\\[\\]]' ).on( 'change', function () {
// get current value
var selectVal = $( this ).val();
// find the input by traversing up the parent first using .closest()
// and use .find() to find particular input exist on the same rows with
// select element, so this never go down to match another input exist on
// another rows
$( this ).closest( 'tr' ).find( '[name=nm_maker\\[\\]]' ).val( selectVal );
});
DEMO(example given were using table)
Better case is just give all the select and input with the same class name for each element. As example give class name myselect to select element and myInput for input element, at the end JS code would be :
$('.mySelect').on('change', function () {
var selectVal = $( this ).val();
$( this ).closest( 'tr' ).find( '.myInput').val(selectVal);
});

Native Javascript:
1) Give each dropdown an ID. This can be done in the HTML or dynamically in javascript.
2) Assign a function to each dropdown for an onclick event.
3) Retrieve the value as such:
function dropdownClicked(){
var ID = this.id;
var element = document.getElementById(ID);
var value = element.value;
}

modal popup displays different text depending on input

So I am attempting to have a modal popup that displays two messages depending on what the user types into the text box. I want the script to check whether the input contains one of two strings, either ME, or TN (as I am looking at doing a postcode checker).
no matter what i try I can't get the popup to display two messages depending on the input. I don't want the form to submit, I just want to grab the contents of what has been typed.
Here's a link to what I have so far (imagine the close icon is in the top right)..
$(document).ready(function () {
var formResult = $('#postcode-form')
var postcodeMe = /^[me]+$/;
$("#postcode-form").click(function () {
if (formResult.val().indexOf(postcodeMe)) {
$("#basic-modal-content").html("<h2>Yes it works</h2>")
} else {
$("#basic-modal-content").html("<h2>no its wrong</h2>")
}
});
});
http://www.muchmorecreative.co.uk/modal_test/basic-modal-testing-jquery-conditions/

try this:
$(document).ready(function() {
var formResult = $('#postcode-form')
var postcodeMe= /^[me]+$/;
$( "#postcode-form" ).click(function(e) {
e.preventDefault();
if ($(this).val().contains(postcodeMe)){
$( "#basic-modal-content").html("<h2>Yes it works</h2>")
}
else {
$( "#basic-modal-content").html("<h2>no its wrong</h2>")
}
});
});

The problem is you're setting formResult as a 'global' variable (sorta). It gets its value when the page loads and never changes. You should change your code to get the value when you actually need it, not immediately after page load.
$(document).ready(function () {
var postcodeMe = /^[me]+$/;
$("#postcode-form").click(function () {
//move it to here so that you get the value INSIDE the click event
var formResult = $('#postcode-form')
if (formResult.val().indexOf(postcodeMe)) {
$("#basic-modal-content").html("<h2>Yes it works</h2>")
} else {
$("#basic-modal-content").html("<h2>no its wrong</h2>")
}
});
});
A few other minor things to consider:
indexOf returns a number. You should probably do indexOf(postcodeMe) >= 0
You can look at index of HERE

Have tried these two but not happening, played around with it and found a solution..
$(document).ready(function() {
var formResult = $('#postcode-input')
$( "#postcode-button" ).click(function(e) {
e.preventDefault();
if ($('#postcode-input').val().indexOf("ME")!==-1 || $('#postcode- input').val().indexOf("me")!==-1 ){
// perform some task
$( "#basic-modal-content").html("<h2>Yes it works</h2>")
}
else {
$( "#basic-modal-content").html("<h2>no its wrong</h2>")
}
});
});
Thanks for the help though!

Jquery get the value of the input when changing

I would like to get the value of an input and return it to a span. I would like to update the span each time the input is changing. The problem is that i will use it for a colorpicker so the user will not usualy write the color value(maybe paste it). So everytime the input textfield will be updated by the colorpicker js i want to update my own field.
I created a simple code to help you understand what i want to do.
Pressing the + you will change the value of the input field and i would like to get that value and print it in the span. Thank you.
HTML ::
<div>
<input type="text" class="mariinsky" /><button id="inside">+</button>
</div>
<button id="outside">Button</button><br />
input value = <span></span>
JS ::
var i = 0;
jQuery('button#outside').click(function() {
jQuery('div').toggle();
});
jQuery('button#inside').click(function() {
jQuery( ".mariinsky" ).val(i);
i++;
});
$( '.mariinsky' ).change( function() {
var bolshoi = jQuery( ".mariinsky" ).val();
jQuery( 'span' ).text(bolshoi);
});
http://jsfiddle.net/existence17/9V8ZU/1/

Add .change() to the end of your '+' handler:
jQuery('button#inside').click(function() {
jQuery( ".mariinsky" ).val(i).change();
i++;
});
That will force the change event to fire and then your code will update the span.

For live DOM changes, use the jQuery on function - the following code would work in your case:
var i = 0;
jQuery('button#outside').click(function() {
jQuery('div').toggle();
});
jQuery('button#inside').click(function() {
jQuery( ".mariinsky" ).val(i);
i++;
});
$( 'button#inside' ).on('click', function() {
var bolshoi = jQuery( ".mariinsky" ).val();
jQuery( 'span' ).text(bolshoi);
});

jQuery doesn't automatically trigger events through code. You need to do so manually using the .trigger() method.
Adding one line did it for me: jQuery('.mariinsky').trigger("change").
Here's a working example: http://jsfiddle.net/9V8ZU/2/
Also a useful question for reference: How to trigger jQuery change event in code

please use this :
$( '.mariinsky' ).on('keypress keyup keydown click copy cut paste', function() {
var bolshoi = jQuery( ".mariinsky" ).val();
jQuery( 'span' ).text(bolshoi);
});
Fiddle example
all the rest of the provided answers aren't covering the entire options.

How to know with jQuery that a "select" input value has been changed?

I know that there is the change event handling in jQuery associated with an input of type select. But I want to know if the user has selected another value in the select element ! So I don't want to run code when the user select a new element in the select but I want to know if the user has selected a different value !
In fact there are two select elements in my form and I want to launch an ajax only when the two select elements has been changed. So how to know that the two elements has been changed ?

You can specifically listen for a change event on your chosen element by setting up a binding in your Javascript file.
That only solves half your problem though. You want to know when a different element has been selected.
You could do this by creating a tracking variable that updates every time the event is fired.
To start with, give your tracking variable a value that'll never appear in the dropdown.
// Hugely contrived! Don't ship to production!
var trackSelect = "I am extremely unlikely to be present";
Then, you'll need to set up a function to handle the change event.
Something as simple as:-
var checkChange = function() {
// If current value different from last tracked value
if ( trackSelect != $('#yourDD').val() )
{
// Do work associated with an actual change!
}
// Record current value in tracking variable
trackSelect = $('#yourDD').val();
}
Finally, you'll need to wire the event up in document.ready.
$(document).ready(function () {
$('#yourDD').bind('change', function (e) { checkChange() });
});

First of all you may use select event handler (to set values for some flags). This is how it works:
$('#select').change(function () {
alert($(this).val());
});​
Demo: http://jsfiddle.net/dXmsD/
Or you may store the original value somewhere and then check it:
$(document).ready(function () {
var val = $('#select').val();
...
// in some event handler
if ($('#select').val() != val) ...
...
});

First you need to store previous value of the selected option, then you should check if new selected value is different than stored value.
Check out the sample!
$(document).ready(function() {
var lastValue, selectedValue;
$('#select').change(function() {
selectedValue = $(this).find(':selected').val();
if(selectedValue == lastValue) {
alert('the value is the same');
}
else {
alert('the value has changed');
lastValue = selectedValue;
}
});
});​

You can save the value on page load in some hidden field.
like
$(document).ready(function(){
$('hiddenFieldId').val($('selectBoxId').val());
then on change you can grab the value of select:
});
$('selectBoxId').change(function(){
var valChng = $(this).val();
// now match the value with hidden field
if(valChng == $('hiddenFieldId').val()){
}
});

$("select").change(function () {
var str = "";
$("select option:selected").each(function () {
str += $(this).text() + " ";
});
$("div").text(str);
})
.change();
http://docs.jquery.com/Events/change