I have the following form:
var x = document.getElementById("submit-button");
if (x.selectedIndex.value == null) {
$("#submit-button").css("display","none");
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<select>
<option disabled selected>Select colour</option>
<option value="Orange">Orange</option>
<option value="Apple">Apple</option>
<option value="Lemon">Lemon</option>
</select>
<button id="submit-button" type="submit">Click</button>
</form>
If the selected index of the dropdown is the disabled placeholder option with no value, i want to hide the submit button. As soon as a colour is selected i want to show the button again.
Any help will be appreciated.
You are in the right way. But missing some points with events:
1 - The whole code must be executed when DOM is ready (document loaded)
2 - You must observe the select change event to check for changes
3 - You can use jQuery .hide() and .show() do control the element's visibility
// Executed when DOM is loaded
$(document).ready(function() {
// Executed when select is changed
$("select").on('change',function() {
var x = this.selectedIndex;
if (x == "") {
$("#submit-button").hide();
} else {
$("#submit-button").show();
}
});
// It must not be visible at first time
$("#submit-button").css("display","none");
});
Look this working fiddle
The shortest way would be
$(function(){
$("select").on("change", function(){
$("#submit-button").toggle(!!this.value);
}).change();
});
<script src="//code.jquery.com/jquery-2.1.1.min.js"></script>
<form>
<select>
<option selected value="">Select colour</option>
<option value="Orange">Orange</option>
<option value="Apple">Apple</option>
<option value="Lemon">Lemon</option>
</select>
<button id="submit-button" type="submit">Click</button>
</form>
You need to create an event handler for when the dropdown changes. In the example below I've hidden the submit button by default, and when the dropdown changes I toggle the visibility of the button based on if there is a selected value in the dropdown.
I allowed your "Select colour" option to be available just to better demonstrate how the event handler works.
$("#submit-button").hide();
$("select").on("change", function() {
if (this.value)
$("#submit-button").show();
else
$("#submit-button").hide();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<select>
<option selected value="">Select colour</option>
<option value="Orange">Orange</option>
<option value="Apple">Apple</option>
<option value="Lemon">Lemon</option>
</select>
<button id="submit-button" type="submit">Click</button>
</form>
You should add a listener to your select like this:
$('form select').on('change', function(){
if($(this).val() == null){
$("#submit-button").hide();
}else{
$("#submit-button").show();
}
}).change();
It will check every time that changes the option, hiding the button when the option has no value and showing it when it does. Also, it will trigger that at first to hide for the initial case.
Hi there Kindly try the following solution and tell me if you wanted something like this :
$(document).ready(function(){
if($('select').val() == null){
$('#submit-button').css('display','none');
}
$('select').on('change', function() {
$('#submit-button').css('display','block');
});
Related
how to let a select trigger a javascript method when the select is being populated and set to default value?
Thanks in advance
This can easily been done with the change event handler.
$('select').change(function(){
if ($(this).val() == 'default') {
console.log('selected default');
} else {
$('p').text($(this).val());
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select>
<option value="default"></option>
<option value="Hello World!">Hello</option>
<option value="Foo and Bar are common used example names">Foo</option>
</select>
<p>Please pick an option.</p>
You can use on change event to handle it .
Javacript/Jquery
function printData() {
console.log("On change of the select box your this fuction will get call");
}
$(document).ready (function () {
$('select').change(function(){
printData();
});
})
HTML
<lable>Select option.</lable>
<select>
<option value="1">Hi</option>
<option value="2">Hello</option>
<option value="3">How are you</option>
</select>
I am a beginner in java-script , what I am doing right here is trying to make my combo-box named "dale" to enable and disable when i select "Reasons Specific Categorized" from my combo-box named "repSelect" but i keep getting an error on my java-script.
function makeEnable(value){
if(value=="rep4"){
var x=document.getElementById("dale")
x.disabled=false
}else{
var x=document.getElementById("dale")
x.disabled=true
}
}
</script>
</script>
<select onChange="makeEnable(value)" name="repSelect">
<option value="rep1">Employee</option>
<option value="rep2">Category Reasons Overall </option>
<option value="rep3">Department Overall </option>
<option value="rep4">Reasons Specific Categorized </option>
</select>
<select name="dale">
<option value="rep1">dale</option>
</select>
<input class="button" type="submit" value="Generar Reporte" >
</form>
My modification But dosent work
function makeEnable(){
var e = document.getElementById("repSelect");
var strUser = e.options[e.selectedIndex].value;
if(strUser=="rep4"){
document.getElementById("dale").disabled=false;
}else{
document.getElementById("dale").disabled=true;
}
}
You are using the .getElementById() method, but your element doesn't have an id defined. Add an id in the html:
<select id="dale" name="dale">
You may also need to modify the call to your function in the first select's onchange handler, to pass this.value instead of just value:
<select onChange="makeEnable(this.value)" name="repSelect">
You can also substantially simplify your function as follows:
function makeEnable(value){
document.getElementById("dale").disabled = value!="rep4";
}
Demo: http://jsfiddle.net/3t16p5p9/
EDIT: I just noticed that you had the jquery tag on your question. To use jQuery, remove the inline onChange= attribute and then add this to your script:
$(document).ready(function() {
$("select[name=repSelect]").change(function() {
$("#dale").prop("disabled", this.value!="rep4");
}).change();
});
This binds a change handler to the first select, and then calls it immediately so that the second one will be appropriately enabled or disabled when the page loads (as requested in a comment).
Demo: http://jsfiddle.net/3t16p5p9/2/
Actually you are using document.getElementById but your combobox doesn't have an Id.
Thats the reason its not working.
Instead of adding onchange in the html, use as below:
<select id='repselect' onchange=makeEnable() name="repSelect">
<option value="rep1">Employee</option>
<option value="rep2">Category Reasons Overall </option>
<option value="rep3">Department Overall </option>
<option value="rep4">Reasons Specific Categorized </option>
</select>
<select id="seldale" name="dale">
<option value="rep1">dale</option>
</select>
<input class="button" type="submit" value="Generar Reporte"/>
$('#repselect').change(function(){
if(this.value=="rep4"){
var x= document.getElementById("seldale")
x.disabled=false
}else{
var x =document.getElementById("seldale")
x.disabled=true
}
});
How can i hide and show a div when click on the basis of text box. i want to show these type of result,the cursor pointer is inside the textbox the div will shown otherwise the focus is out the div will be hidden and if any value is inside a textbox the div will shown if the value is cleared the div will be hidden .these are the code
<div class="banner_search_inner_box_search">
<input type="text" name="search" class="search" id="searchid" onkeyup="getshows();" value="" placeholder="Enter a City,Locality" autocomplete="off">
<div id="result"></div>
</div>
<div id="drope_box" style="display:none;">
<div class="banner_search_type">
<select id="property_type" name="property_type">
<option value="All">All</option>
<option value="Apartment">Apartment</option>
<option value="Plot">Plot</option>
</select>
</div>
<div class="banner_search_price_min">
<select name="price_min" class="search_list" id="price_min">
<option value="">Price Min</option>
<option value="100000">1 lac</option>
<option value="1000000">10 lacs</option>
</select>
</div>
<div class="banner_search_price_max">
<select name="price_max" id="price_max">
<option value="">Price Max</option>
<option value="100000">1 lac</option>
<option value="1000000">10 lacs</option>
</select>
</div>
</div>
here is my js code
<script type="text/javascript">
function getshows()
{
if(document.getElementById("searchid").value != "")
{
document.getElementById("drope_box").style.display="block";
}
else
{
document.getElementById("drope_box").style.display="none";
}
}
</script>
<script type="text/javascript">
$('#searchid').blur(function() {
$("#drope_box").hide()
});
$('#searchid').focus(function() {
$("#drope_box").show()
});
</script>
somebody please help me
Here: http://jsfiddle.net/Kq9pX/
JS
Do it on load: Wrap around document.ready function.
$('#searchid').blur(function() {
if($(this).val() != ""){
$("#drope_box").show();
}
else{
$("#drope_box").hide();
}
});
$('#searchid').focus(function() {
$("#drope_box").show();
});
It's generally advised to attach events using jQuery's on rather than blur(), focus(), click() etc in newer versions of jQuery, although I admit in this case there is no difference (read more here Why use jQuery on() instead of click()). But caching jQuery objects by storing them in a variable, like below, is slightly faster.
var $search = $('#searchid');
var $dropBox = $('#drope_box');
$search.on('blur', function () {
$dropBox[($.trim($search.val()).length > 0 ? 'show' : 'hide')]();
}).on('focus', function () {
$dropBox.show();
});
There's no problem with show and hide other than when it's showed the div hides if you try to select the options, to turn this around we can use focusout on the drope_box div:
$(document).ready(function(){
$('#drope_box').focusout(function() {
//check if the text input and selects have values selected
if($("#searchid").val() == "" &&
$("#property_type").val() == "" &&
$("#price_min").val() == "" &&
$("#price_max").val() == "" )
$("#drope_box").hide() //if not, hides
});
$('#searchid').focus(function() {
$("#drope_box").show()
});
});
Of course, for it to work the:
<option value="All">All</option>
Must be cleared:
<option value="">All</option>
FIDDLE: http://jsfiddle.net/e672Y/1/
Use jQuery:
$("#textbox").mouseenter(function(){
$("#div").show();
});
$("#textbox").mouseleave(function(){
$("#div").hide();
});
This so far will show the div whilst it is hovered, mouseenter checks if the textbox is moused over, mouseleave checks if it is not.
I have a form with a select field followed by an add button. When the user clicks add I want whatever item is selected to be added to an array so I can pass it in my form
// this is my visible field
<select id="contactsFollow" name="contactsFollow">
<option value="1">option 1</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
</select>
<button type="button" class="btn">Add</button>
What would be the best way for me to go about doing this? I am assuming jquery will do this but I have no clue on how to implement.
Demo: http://jsfiddle.net/MsNKR/
$('.btn').click(function () {
$('#contactsFollow :selected').appendTo('#contactsFollowSelected');
});
or Demo: http://jsfiddle.net/zvQgq/ if you don't want to remove options from first select
$('.btn').click(function () {
$('#contactsFollow :selected').clone().appendTo('#contactsFollowSelected');
});
i don't know what are you tryin to do .. but adding it to a select and passing it in a form make no sense to me since u need to select the hidden selectbox again to pass it to a form... anyways jquery is the best option to me..
and here is how you can do it..
$('.btn').click(function () {
$('#contactsFollow :selected').appendTo('#contactsFollowSelected');
});
UPDATED
make hidden input field..
<input type="hidden" name="selectedoption" id="selectedoption" value="" />
jquery
$('.btn').click(function () {
var selected=$('#contactsFollow :selected').val();
var hiddeninputValue=$('#selectedoption').val();
if(hiddeninputValue==""){
$('#selectedoption').val(selected);
}else{
$('#selectedoption').val(hiddeninputValue + ',' + selected);
}
$('#contactsFollow :selected').remove();
});
seperate the hidden value with ',' before inserting it to db..
example fiddle
I have a multi selection combo box and a checkbox in a form.
I'd like the checkbox to be enabled only when user selects a particular value from the multi selection combo box.
Is this possible to do ...either by javascript or jQuery. I am already using jquery elsewhere.
Example: http://jsbin.com/ipomu
to begin with checkbox will be disabled. it should only be enabled when user clicks on option 2
A sample one. You just add the option values for which you want to enable the checkbox to the array object. In the following sample I have enabled the checkbox on click of 2, 3,5 and 7 options.
<script type="text/javascript">
$(function(){
var arrVal = [ "2","3", "5", "7" ];
$("#combobox").change(function(){
var valToCheck = String($(this).val());
if ( jQuery.inArray(valToCheck,arrVal) == -1 )
{
$("#check").attr("disabled", "true");
}
else
{
$("#check").removeAttr ( "disabled" );
}
});
});
</script>
<select id="combobox" size="9" id="reasons" multiple="multiple">
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
<option value="4">Option 4</option>
<option value="5">Option 5</option>
<option value="6">Option 6</option>
<option value="7">Option 7</option>
</select>
Working demo for your example.
I updated the jsbin link you provided with the proper jQuery needed to achieve the desired effect.
http://jsbin.com/ipomu/2
You can enable/disable an html element through javascript with:
document.getElementById('<the id of your checkbox here>').disabled = true;
So, you have to add OnChange event of your multi selection combo box and add logic in some function when to disable/enable your checkbox.
Example:
<select onChange="myfunc(this)">
...
<script>
function myfunc(sel)
{
if (sel.selectedValue == "2")
document.getElementById('<the id of your checkbox here>').disabled = true;
}
</script>
Most simply, with straight Javascript, and no jQuery, you could add the following onchange attribute to the select element (assuming that the elements are both surrounded by the same form):
onchange="this.form['mycheck'].disabled = (this.value != 2)"
If they are not in the same form, or if you don't know the name of the intended element, or the elements are dynamically created, the .disabled = (this.value != 2) will be the same, but the method of finding the right checkbox may be different.