jQuery ‘input’ event

Occurs when the text content of an element is changed through the user interface. It’s not quite an alias for keyup because keyup will fire even if the key does nothing (for example: pressing and then releasing the Control key will trigger a keyup event). A good way to think about it is like this: … Read more

How can I disable a button in a jQuery dialog from a function?

You would want to set the disabled property $(‘#continueButton’).attr(“disabled”, true); Update: Ahha, I see the complexity now. The jQuery Dialog had a single line that will be of use (under the “buttons” section. var buttons = $(‘.selector’).dialog(‘option’, ‘buttons’); You’ll need to get the buttons collection from the dialog, loop through that to find which one … Read more

jquery 3.0 url.indexOf error

Update all your code that calls load function like, $(window).load(function() { … }); To $(window).on(‘load’, function() { … }); jquery.js:9612 Uncaught TypeError: url.indexOf is not a function This error message comes from jQuery.fn.load function. I’ve come across the same issue on my application. After some digging, I found this statement in jQuery blog, .load, .unload, … Read more

How to get the class of the clicked element?

Here’s a quick jQuery example that adds a click event to each “li” tag, and then retrieves the class attribute for the clicked element. $(“li”).click(function() { var myClass = $(this).attr(“class”); alert(myClass); }); Equally, you don’t have to wrap the object in jQuery: $(“li”).click(function() { var myClass = this.className; alert(myClass); }); And in newer browsers you … Read more

jQuery find parent form

I would suggest using closest, which selects the closest matching parent element: $(‘input[name=”submitButton”]’).closest(“form”); Instead of filtering by the name, I would do this: $(‘input[type=submit]’).closest(“form”);

Change Placeholder Text using jQuery

$(document).ready(function(){ $(‘form’).find(“input[type=textarea], input[type=password], textarea”).each(function(ev) { if(!$(this).val()) { $(this).attr(“placeholder”, “Type your answer here”); } }); }); Copy and paste this code in your js file, this will change all placeholder text from whole site.

Firing events on CSS class changes in jQuery

Whenever you change a class in your script, you could use a trigger to raise your own event. $(this).addClass(‘someClass’); $(mySelector).trigger(‘cssClassChanged’) …. $(otherSelector).bind(‘cssClassChanged’, data, function(){ do stuff }); but otherwise, no, there’s no baked-in way to fire an event when a class changes. change() only fires after focus leaves an input whose input has been altered. … Read more

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