Calling the click function for button in jQuery - javascript

I am very new to jQuery and HTML. I am trying to create a button in html that uses jQuery to make the button to prompt alert message when clicked (rather than using onclick in html). In other words, I would like to use the jquery to call up the click function for the button and then return a pop up message.
I have my input type as "button" and my value as "Check" for my button in html.
Here's my code in javascript
$(document).ready(function(){
$("button").click(function(){
alert("Pop Out");
});
but nothing is showing up
Here's a fiddle to my code
http://jsfiddle.net/0ynbv233/8/

I have my input type as "button"
Like this?
<input type="button" />
In that case, this won't work:
$("button")
That selector is looking for button elements, not input elements. You can change the element:
<button />
or you can change the selector:
$('input[type="button"]')

I did what you have done and it worked for me.
Here is what my code was.
$(function(){
$("button").click(function () {
alert("Pop Out");
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<button>Click Me</button>
Hope you figure out what you are doing wrong.

Related

Ajax function with multiple buttons for a .click event

I have a form with two buttons that have the same name and id (don't ask me why, I didn't create the form lol). I am trying to use Ajax .click function to run when the buttons are clicked. However, the function is only working with the "Approve" button and not the "Forward" button. Is there anyway to call this function from the Forward button?
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#btnApprove").click(function(){
alert("Button was clicked.");
});
});
</script>
</head>
<body>
<input type="submit" name="btnSubmit" id="btnApprove" value="Approve" tabindex="1102" />
<input type="submit" name="btnSubmit" id="btnApprove" value="Forward" tabindex="1102" />
</body>
</html>
I modified the code from http://www.w3schools.com/jquery/tryit.asp?filename=tryjquery_event_click
IDs must be unique. Even if they aren't unique, jQuery only selects the first occurence.
You should change the IDs to be unique.
But anyway, you select per name instead:
$("input[name=btnSubmit]").click(function(){
alert("Button was clicked.");
});
No two elements on a page should have the same id.
$("#btnApprove") maps the the native document.getElementById method which returns the first instance of an element of that id, so the event is only being bound to the first button
add a class attribute to both buttons, putting them in the same class
then you should be able to do something like
$('.NameOfClassHere').click(function(){
or
$('.NameOfClassHere').live('click', function () {
This will work for the click event of all buttons in that class, so saves you from using duplicate code. Also, agreed that you should not use duplicate IDs. Hopefully this helps.

How to know input indirect change?

I use jQuery to know my input changes .
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#id_back_ground_color").change(function(){
alert("hello");
});
$("#salam").click(function(){
alert("hey");
$("#id_back_ground_color").val('changed!');
});
});
</script>
</head>
<body>
<input id="id_back_ground_color" type="text">
<button id="salam" >
</body>
</html>
When I click on the button I get a "hey" alert but I don't get the "hello" alert. Why?
There's no link between a click on the button and an edit in the id_back_ground_color field.
The change event is sent to an element when its value changes. This
event is limited to elements, boxes and
elements. For select boxes, checkboxes, and radio buttons, the event
is fired immediately when the user makes a selection with the mouse,
but for the other element types the event is deferred until the
element loses focus.
From http://api.jquery.com/change/
Change this line
$("#id_back_ground_color").val('changed!');
to this
$("#id_back_ground_color").val('changed!').trigger( "change" );

When an input button field is added to the page using jQuery, how to access values

I have generated input button fields based on values inputted elsewhere in the page
$('#saved_answers').prepend('<input type="button" name="remove_answer" value="' + answerstring + '"><br />');
Afterwards, I tried calling:
$("input:button[name=remove_answer]").click(function() {
alert("Test!");
});
But nothing happens. When I view source, I also notice that none of the new code shows up. However, it does show up visually in the window.
You should use the jQuery on method rather than click, so something like
$('#saved_answers').on('click', 'some selector for your newly added button', function(){
alert("Test!");
}
This will allow for the event to be attached correctly.
See jQuery .on method
If you use this it should work:
<html>
<head>
</head>
<body>
<div id="saved_answers"></div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<script>
$(function(){
$('#saved_answers').prepend('<input type="button" name="remove_answer" value="test" />');
$('#saved_answers').on('click', 'input:button[name=remove_answer]', function(){
alert($(this).val());
});
});
</script>
</body>
</html>
Correct me if I misunderstood your question. What you did is binding an event handler to the click event,
$("input:button[name=remove_answer]").click(function () {
alert("Test!");
});
if you want to trigger the click event, you need this
$("input:button[name=remove_answer]").click();

jQuery input button click event listener

Brand new to jQuery.
I was trying to set up an event listener for the following control on my page which when clicked would display an alert:
<input type="button" id="filter" name="filter" value="Filter" />
But it didn't work.
$("#filter").button().click(function(){...});
How do you create an event listener for a input button control with jQuery?
First thing first, button() is a jQuery ui function to create a button widget which has nothing to do with jQuery core, it just styles the button.
So if you want to use the widget add jQuery ui's javascript and CSS files or alternatively remove it, like this:
$("#filter").click(function(){
alert('clicked!');
});
Another thing that might have caused you the problem is if you didn't wait for the input to be rendered and wrote the code before the input. jQuery has the ready function, or it's alias $(func) which execute the callback once the DOM is ready.
Usage:
$(function(){
$("#filter").click(function(){
alert('clicked!');
});
});
So even if the order is this it will work:
$(function(){
$("#filter").click(function(){
alert('clicked!');
});
});
<input type="button" id="filter" name="filter" value="Filter" />
DEMO
$("#filter").click(function(){
//Put your code here
});
More on gdoron's answer, it can also be done this way:
$(window).on("click", "#filter", function() {
alert('clicked!');
});
without the need to place them all into $(function(){...})

JQuery / JavaScript - trigger button click from another button click event

I have this HTML which looks like this:
<input type="submit" name="savebutton" class="first button" />
<input type="submit" name="savebutton" class="second button" />
and JS:
jQuery("input.second").click(function(){
// trigger second button ?
return false;
});
So how can I trigger the click event from the 2nd button by clicking on the first one?
Note that I don't have any control over the 2nd button, neither on the html or the click event on it...
Add id's to both inputs, id="first" and id="second"
//trigger second button
$("#second").click()
Well, you just fire the desired click event:
$(".first").click(function(){
$(".second").click();
return false;
});
jQuery("input.first").click(function(){
jQuery("input.second").trigger("click");
return false;
});
You mean this:
jQuery("input.first").click(function(){
jQuery("input.second").trigger('click');
return false;
});
By using JavaScript: document.getElementById("myBtn").click();
this works fine, but file name does not display anymore.
$(document).ready(function(){ $("img.attach2").click(function(){ $("input.attach1").click(); return false; }); });
If it does not work by using the click() method like suggested in the accepted answer, then you can try this:
//trigger second button
$("#second").mousedown();
$("#second").mouseup();

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