Select box option based on text box value - javascript

Below is my code which change select option based on text box value but I want to change value of select option without click on "Select Now" button. Means select option change directly from text box value, button is not needed to do same.
<select name="sel" id="MySelect">
<option value="">Select One</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
<option value="4">Four</option>
<option value="5">Five</option>
<option value="6">Six</option>
</select><br><br>
Select By Text: <br>
<input type="text" name="selText" value="Six">
<input type="button" name="selectNow" value="Select Now">
$(function() {
$('input[name=selectNow]').on('click', function(event) {
selectByText($.trim($('input[name=selText]').val()));
}).click();
});
function selectByText(txt) {
$('#MySelect option')
.filter(function() {
return $.trim($(this).text()) == txt;
})
.attr('selected', true);
}

The logic is the same, except you need to hook to the keyup event on the selText element:
$('input[name=selText]').on('keyup', function() {
selectByText($.trim($(this).val()));
});
Example fiddle

Just change the event to be raised when the value of selText changes:
$('input[name=selText]').on('change', function(event) {
selectByText($.trim(this.value));
}).change();
See Fiddle

Related

how to get event listener not to ignore if the first element in the select menu is clicked

i have tried the traditional method of addEventListener change but if i click on the first element on the list it wont respond, it only works if i click on australia then india...
HTML
<select id="country" >
<option value="india">India</option>
<option value="australia">Australia</option>
<option value="turkey">Turkey</option>
</select>
JS
var a = document.getElementById('country');
a.addEventListener('change', function() {
alert(this.value);
}, false);
You can add a default <option> like the the following:
<option selected disabled>DEFAULT</option>
Or you can use a more direct event like "click"
document.querySelector('#country').addEventListener('click', function(e) {
document.querySelector('#view').value = this.value;
});
<output id='view'></output><br>
<select id="country" >
<option value="india">India</option>
<option value="australia">Australia</option>
<option value="turkey">Turkey</option>
</select>
Its working as expected, as per 'change event' works when HTMLElement changes its value. With your 'select' element, it will not change its value when you select the same value is already selected.
You can add a default 'Select your value...' or something else you want, to prevent this behavior and accomplish what you are looking for.
HTMLElement: change event
var a = document.getElementById('country');
a.addEventListener('change', function() {
if (this.value === 'default')
return;
alert(this.value);
}, false);
<select id="country" >
<option value="default">Select country</option>
<option value="india">India</option>
<option value="australia">Australia</option>
<option value="turkey">Turkey</option>
</select>

Change the text color of a button with an option

I have some issues with options, can someone help me ?
I have a button with id="colorButton" but I don't know how to change his color with options.
<form>
<select id="colorSelect">
<option selected disabled>Text-Align : </option>
<option value="1">Red</option>
<option value="2">Blue</option>
<option value="3">Green</option>
</select>
</form>
It can be a javascript answer, jquery... please :(
I have this in script :
$(document).ready(function(){
if ($("#colorSelect").click().val("1"){
$("#testButton").css("color", "red");
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
But ofc it don't work :(
Your code contains lots bugs, you just need to bind a change event handler and set color based on selected option.
$(document).ready(function() {
$("#colorSelect").change(function() {
$("#testButton").css("color", $(':selected', this).text());
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<select id="colorSelect">
<option selected disabled>Text-Align : </option>
<option value="1">Red</option>
<option value="2">Blue</option>
<option value="3">Green</option>
</select>
</form>
<div id="testButton">button</div>
You need to bind to the change event of the select like:
$(document).ready(function() {
$("#colorSelect").change(function() {
if ($(this).val() == 1) $("#testButton").css("color", "red");
})
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<select id="colorSelect">
<option selected disabled>Text-Align : </option>
<option value="1">Red</option>
<option value="2">Blue</option>
<option value="3">Green</option>
</select>
</form>
<button id="testButton">button</button>
Everyone is focusing on making your code functional. I put the effort to solve your problem in different way.
Each option has data-color attribute. When you change dropdown then selected option's data-color value get picked and changes color. In this way, you don't need multiple if-else.
$(document).ready(function() {
$('#colorSelect').on('change', function(){
var color = $(this).find(':selected').data('color');
$("#testButton").css("color", color);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<select id="colorSelect">
<option selected disabled>Text-Align : </option>
<option data-color='red'>Red</option>
<option data-color='blue'>Blue</option>
<option data-color='green'>Green</option>
</select>
<button id="testButton">button</button>
</form>

What event can I bind on an option in a select multiple?

Assuming I have a multiple select list like:
<select name="persons" id="persons" multiple size="8">
<option id="captureMe">Test option</option>
<option value="" disabled="disabled">─────────</option>
<option value="FR">Franck</option>
<option value="GE">Georges</option>
<option value="DA">David</option>
<option value="LU">Luc</option>
<option value="DO">Donald</option>
<option value="FR">FRANCOIS</option>
</select>
What event can I bind on $("#captureMe") ?
I tried some scripts like
$("#captureMe").change(function() {alert("got it!");});
$("#captureMe").on("change", function() {alert("got it!");});
$("#persons").on("change", "#captureMe", function() {alert("got it!");});
But none of these works nor with the click event.
So my question is, what event can I bind to an option in a select multiple ?
I don't wont the event being fired from the select but from the option by itself
(The goal could be firing an ajax call when a specific option is changed)
You can use click event instead of change:
$("#captureMe").on('click', function(){
console.log("got it!");
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="persons" id="persons" multiple size="8">
<option id="captureMe">Test option</option>
<option value="" disabled="disabled">─────────</option>
<option value="FR">Franck</option>
<option value="GE">Georges</option>
<option value="DA">David</option>
<option value="LU">Luc</option>
<option value="DO">Donald</option>
<option value="FR">FRANCOIS</option>
</select>
Please, take a look to the following code:
<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-3.1.0.js"></script>
</head>
<body>
<select name="persons" id="persons" multiple size="8">
<option id="captureMe">Test option</option>
<option value="" disabled="disabled">─────────</option>
<option value="FR">Franck</option>
<option value="GE">Georges</option>
<option value="DA">David</option>
<option value="LU">Luc</option>
<option value="DO">Donald</option>
<option value="FR">FRANCOIS</option>
</select>
</body>
<script>
$("#persons").change(function() {
var values = $("#persons").val();
if($.inArray($("#captureMe").val(), values) > -1){
if(!$("#captureMe").prop("isSelected")){
$("#captureMe").prop("isSelected", true);
console.log("'caputreMe' is selected");
}
}else{
if($("#captureMe").prop("isSelected")){
$("#captureMe").prop("isSelected", false);
console.log("'caputreMe' is unselected");
}
}
});
</script>
</html>
I hope it helps you. Bye.
$(document).on("change", "#persons", function() {alert("got it!");});
You can for example use the :selected selector, see https://api.jquery.com/selected-selector/
$("select").change(function() {
$("#captured-by-id:selected").each(function() {
alert($(this).text());
});
});
Here's a Fiddle.
isn't it possible to make it work in following way?
var selectedValue = "";
$("#persons").change(function() {
var values = $(this).val();
if()// condition to check if #captureme option is present in "selectedValue" variable
{
// logic
}
else if() // condition to check if #captureme was not present in "selectedValue" before and is selected now
{
// logic
}
selectedValue = value;
});

How to change a border color of html select tag if value is empty or 0

I have 4 select tag with class name select2 assigned to it. I want to make the border turn to red if there's no selected options or has an value equal to empty or 0. I've tried to add class using jquery but it makes all select.select2 border turns red.
Style
<style>
.errorType {
border-color: #F00 !important;
}
</style>
HTML
<select name="category" class="form-control select2" id="category" onChange="search_Operator(this.value)">
<option value="0"> Select Operator Category</option>
<option value="1">one</option> <option value="2"> two</option>
</select>
<select name="operatorName" class="form-control select2" id="operatorName" onChange="">
<option value="0"> Select operator Name</option>
<option value="1">one</option>
<option value="2"> two</option>
</select>
<select name="regionName" class="form-control select2" id="regionName">
<option value="0"> Select region Name</option>
<option value="1">one</option>
<option value="2"> two</option>
</select>
<select name="type" class="form-control select2" id="type">
<option value="0"> Select type </option>
</select>
JQUERY
$(function () {
$(".select2").select2();
});
$(".select2-selection").addClass('errorType');
Any idea?
Thanks in advance.
I've attached a function to the click event of the submit button, in order to check the value of every select element on the page:
$(function () {
$('.form-control-select2').select2();
$('#submit_btn').on('click', function(){
var submit_form = true;
$(".form-control-select2").each(function(){
var selected_value = $(this).val();
if (selected_value==0 || selected_value=='') {
$(this).next().find('.select2-selection').addClass('errorType');
submit_form = false;
} else {
$(this).next().find('.select2-selection').removeClass('errorType');
}
});
return submit_form;
});
});
Fiddle here: https://jsfiddle.net/64a41thz/21/.
Also, if you want to remove the red border when valid selection is made, add the following code:
$('.form-control-select2').on('change', function(){
if ($(this).val()!=0 && $(this).val()!='') {
$(this).next().find('.select2-selection').removeClass('errorType');
}
});
Fiddle here: https://jsfiddle.net/64a41thz/24/.
This does the trick. You just need to replace #yourButton with the actual ID you use.
$(document).on("click", "#yourButton", function() {
$(".select2").each(function(index, element) {
$(element).removeClass("errorType");
if ($(element).val() === "0") {
$(element).addClass("errorType");
}
});
});
Put your select tag inside a form with an id="submit" as shown
<form class="" action="" method="post" id="submit">
and add a button below the 4 select tags with this attribute
onclick="return submit_form('form#submit')"
the button should be like this,
<button type="button" class="btn btn-default" onclick="return submit_form('form#submit')">Submit</button>
In your jquery
function submit_form (form_id) {
$(form_id).find('select[name]').each(function (index, node) {
if (node.value == 0) {
var id = "select#" + node.id;
$(id).addClass('errorType');
}
});
}
This will search select tag with name as attribute, if found, it will get the value of the name and check of its empty or not. If found empty it will add new class that turns that select tag into a red border.
Hope this will help

How do I get selected value from a bootstrap select drop down

I'm trying to get the selected text, not value, from my bootstrap drop down, but my .text() statement is returning a string that contains all the values with a '\n' in between.
Here is my rendered html
<select class="form-control" id="SpaceAccommodation" name="YogaSpaceAccommodation">
<option selected="selected" value="0">1-4</option>
<option value="1">5-9</option>
<option value="2">10-15</option>
<option value="3">16-20</option>
<option value="4">20+</option>
</select>
Here is my javascript, but selectedText returns '5-9\n10-15\n16-20\n20+'
I want it to return 5-9 or 10-15, etc..
$('#SpaceAccommodation').change(function () {
var selectedText = $(this).text();
});
You can get the selected value's text with $(this).find("option:selected").text().
$('#SpaceAccommodation').change(function () {
var selectedText = $(this).find("option:selected").text();
$(".test").text(selectedText);
});
<script src="https://code.jquery.com/jquery-1.6.4.min.js"></script>
<select class="form-control" id="SpaceAccommodation" name="YogaSpaceAccommodation">
<option selected="selected" value="0">1-4</option>
<option value="1">5-9</option>
<option value="2">10-15</option>
<option value="3">16-20</option>
<option value="4">20+</option>
</select>
<div class="test"></div>
Fiddle for you
$(document).ready(function () {
$('.chzn-select').change(function () {
alert( $('.chzn-select option:selected').text());
});
});
<select id="second" class="chzn-select" style="width: 100px">
<option value="1">one</option>
<option value="2">two</option>
</select>
This is based on the css3 psuedo-class :selected. It's very similar to :checked, I couldn't find docs for :selected
In case anyone cares, I've got another solution. I just looked at the arguments from the docs. You can do something like this (Assuming you've set the value tag of the option element.:
$('#type_dropdown')
.on('changed.bs.select',
function(e, clickedIndex, newValue, oldValue) {
alert(e.target.value);
});
});
See https://silviomoreto.github.io/bootstrap-select/options/

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