I wish to do the following:
Create a list(ul and li). Then on ul click, i want to insert div based on condition i.e. if checkbox is selected then created a div with 4 checkboxes.
If radio is selected from the list then a div is created with 4 radios.
Following is my jquery code:
var addDiv=document.createElement("div");
$("#id-ul").click(function(){$('#sidr-bottom').hide();
var div_id=0;
addDiv=document.createElement("div");
$( "#A_MULTI" ).on( "click", { divId:addDiv }, myHandler );
$( "#A_RADIO" ).on( "click", { divId:addDiv }, myHandlerRadio );
addDiv.id = "div_multi"+div_id; ...
checkbox handler:
function myHandler( event ) {
alert("check : "+ event.data.divId );}
radio handler:
function myHandlerRadio( event ) {
alert("radio:"+ event.data.divId );}
Now the problem is that when i click on checkbox from the list for first time, myhandler is not called.
When i click it again, handler gets called once.
When i click it once more, handler gets called twice.
What is the reason for this weird behavior?
Please let me know how do i solve this.
edited :
I moved the below 2 lines outside #id-ul click.
$( "#A_MULTI" ).on( "click", { divId:addDiv }, myHandler );
$( "#A_RADIO" ).on( "click", { divId:addDiv }, myHandlerRadio );
I still face the same problem.
This is because you are assigning event handler every time your #id-ul is clicked.
Please move your event outside event handler.
The problem is that you are adding handlers without ever clearing them. You should do this:
$( "#A_MULTI" ).off("click").on( "click", { divId:addDiv }, myHandler );
$( "#A_RADIO" ).off("click").on( "click", { divId:addDiv }, myHandlerRadio );
To remove the old handler(s) before assigning new ones.
Related
Binding events to an element should be something like:
$( document ).on( 'change', '#mySelect', showEvent );
$( document ).on( 'click', '#mySelect', showEvent );
function showEvent() {
console.log( event.target );
}
But by doing a simple test as shown below, binding the change and click events to the object mySelect they are triggered on different elements (change only by changing the select and the click by clicking anywhere on the document).
var mySelect = $( '#mySelect' );
$( document ).on( 'change', mySelect, showEvent );
$( document ).on( 'click', mySelect, showEvent );
function showEvent( event ) {
console.log( event.target );
}
Two questions:
How does the change event work? By the documentation it shouldn't work because the selector must be a string:
A selector string to filter the descendants of the selected elements that trigger the event.
It souldn't work but, if the change works, why doesn't the click?
selector
Type: String A selector string to filter the descendants of the selected elements that trigger the event. If the selector is null or omitted, the event is always triggered when it reaches the selected element.
Taken from http://api.jquery.com/on/
You are using the selector as a jQuery object, this method is mainly using for event delegation for binding event to dynamically generated element. So you can bind event directly to the jQuery object as
var mySelect = $( '#mySelect' );
mySelect.on( 'change', mySelect, showEvent )
.on( 'click', mySelect, showEvent );
function showEvent() {
console.log( event.target );
}
If it's dynamically generated then remove the $ wrapping just provide it as string
var mySelect = '#mySelect';
$( document ).on( 'change', mySelect, showEvent );
$( document ).on( 'click', mySelect, showEvent );
function showEvent() {
console.log( event.target );
}
I used OnClick drop down text with JavaScript and HTML code to make the dropdown hidden div project.
But the problems are:
1 - It won't open divs separatelly, all of the "projects" are open at once;
2 - I won't come back up once I click it again.
I made another line of code to make it go up:
$(function() {
$(".project").on('click', function() {
$(this).parent().find('.details').slideDown();
});
$(".project").on('click', function() {
$(this).parent().find('.details').slideUp();
});
});
$(function() {
$(".project2").on('click', function() {
$(this).parent().find('.details').slideDown();
});
$(".project2").on('click', function() {
$(this).parent().find('.details').slideUp();
});
});
And so on... and it goes up as soon as I click it only once, like an animation. It won't stay down and THEN on the next click it goes back up. AND it still gets both down instead of each one separately.
You shouldn't use document.ready to often if isn't needed.
// Shorthand for $( document ).ready()
$(function() {
});
If you bind two events to an element, .. it will be executed if you don't stopPropergation or making "cases".
So you can check the visibility and decide what to do:
$( function () {
$("[class^='project']").on( 'click', function () {
var $details = $( this ).parent().find( '.details' );
if ($details.is(':visible'))
$( this ).parent().find( '.details' ).slideUp();
else
$( this ).parent().find( '.details' ).slideDown();
});
} );
https://jsfiddle.net/3738Lnmf/
edit:
slideToggle is more elegant :) #Diego López
$( function () {
$("[class^='project']").on( 'click', function () {
$(this).parent().find('.details').slideToggle();
});
} );
https://jsfiddle.net/3738Lnmf/1/
Use .slideToggle() if you want to toggle between show and hide the div elements
$(function() {
$(".project").on('click', function() {
$(this).parent().find('.details').slideToggle();
});
$(".project2").on('click', function() {
$(this).parent().find('.details').slideToggle();
});
});
I have a button on my page which, when clicked, listens for another button being clicked and then performs an AJAX call. For example:
$( 'button#a' ).click( function() {
$( 'button#b' ).click( function() {
// Perform an AJAX call here.
});
});
Here is a demo of my code so far:
DEMO
I want to disable the ajax call functionality if a third button button#c is clicked at any time during the time that the page is loaded. I'm at a loss at how this can be done. Hoping someone can suggest an approach.
Should not code click event inside click, but after modifying in your code.
var third_click= false;
$(document).ready(function() {
$( 'button#c' ).click( function() {
third_click = true;
})
$( 'button#a' ).click( function() {
$( 'button#b' ).click( function() {
if( !third_click ) {
// Perform an AJAX call here.
alert( 'ajax call in progress' );
} else {
alert( 'Can\'t call ajax' );
}
});
});
})
here is demo.
What if you used button a to hide button b until a is clicked and then show button b and so fourth until your results are displayed as you with.
example:
$('.btnB').hide();
$('.btnA').on('click', function() {
$('.btnB').toggle();
});
Unless it needs to all display at one time this method wouldn't be able to work in that type of situation
You can just remove the click events from #a and b# when clicking on #c with:
$('#c').click(function () {
$('#a,#b').off('click')
})
jsFiddle example
I have this JQuery code:
function JQueryPopup(value) {
$(value).toggle();
$('#JQueryClose').click(function(){
$(value).hide();
});
$( document ).on( 'click', function ( e ) {
$(value).hide();
});
$( document ).on( 'keydown', function ( e ) {
if ( e.keyCode === 27 ) { // ESC
$(value).hide();
}
});
}
and a HTML button that calls this function, it doesn't seem to be showing the popup window/div.
here is a fiddle with my full code: http://jsfiddle.net/XHLY8/3/
P.S. i do have this code on another page, i call the function like this:
<script type="text/javascript">JQueryPopup('#customer_popup_notes');</script>
which works fine.
You need to add the following:
$('#inbox_button').on('click', function(event){
event.preventDefault(); // This isn't critical, but you would need
event.stopPropagation();
JQueryPopup('#inbox_div');
});
You want to stop the click event from bubbling up and triggering the following:
$( document ).on( 'click', function { ... });
Otherwise your #inbox_div will be hidden before you can see it.
Here is a working fiddle.
I suggest reading up on stopPropagation and preventDefault.
You dont need
$( document ).on( 'click', function ( e ) {
$(value).hide();
});
Which always hides the Bottom div no matter where u click .
Working fiddle
I want to prevent clicking on an element, while it performs some animations and then enable it later. I have tried to use unbind and then bind, but clicking remains permanently disabled.
Is there any other way to do it?
$("something").on("click", function() {
$("selected").unbind("click");
$("selected").animate({...}, function() {
$("selected").unbind("click");
});
basically, i don't want someone to click on the selected div while the animation is in progress, as clicking on it will start another set of animations which i don't want to start in between.
Try this, using a flag variable to store the info if the animation is happening:
var animating = false;
$("something").on("click", function () {
animating = true;
$("selected").animate({...
}, 1000, function () {
animating = false;
});
});
$("selected").click(function(){
if (animating) return false;
});
Use on and off this way you can "bind" the function foo to a click event on a particular element, switch it off and on again, as many times as you like. Have fun ;-)
DEMO: http://jsfiddle.net/4yBbb/2/
var foo = function() {
// Code to handle some kind of event
};
// ... Now foo will be called when paragraphs are clicked ...
$( "p" ).on( "click", foo );
// ... Foo will no longer be called.
$( "p" ).off( "click", foo );
edit: updated answer, my example used delegation and this was not necessary.
applied to your example it would look like this:
$("something").on("click", function() {
$("selected").off( "click", foo );
$("selected").animate({...}, function() {
$("selected").on( "click", foo );
});
clicking remains permanently disabled.
Because when never bind the "click" again to $("something"). Try:
$("something").on("click", function animate() {
var _this = $(this);
_this.off("click");
$("selected").animate({...}, function() {
_this.on("click",animate);
});
Here I use named function to make it easy to refer to the function again.
How about adding a check in your click function to perform the animation only when the clicked element is not animating?
$("something").on("click", function() {
$("selected").animate({...});
});
$("selected").on("click",function(){
if(!$(this).is("selected:animated")){
//Start other animation
}
});
Demo fiddle
Use .on() & .off() event of jquery. here is the example Jquery API
you need to do somthing like as follows:
function flash() {
// do your stuff here
}
$("something").on("click", function() {
$( "body" ).off( "click", "Your Div Selector", flash );
});
$("something").on("click", function() {
$( "body" ).on( "click", "Your Div Selector", flash );
});