Check If Element Has ID Using jQuery
To check if an element has an ID: if ($(this).is('[id]') { // Has ID console.log('Has ID: ' + $(this).attr('id')); } else { // Has no ID console.log('Has no ID.'); }
jQuery – Selector Starts-Ends With
Selector Starts With: $('input[name^=somePrefix]').doSomething(); Selector ENDS with: $('input[name$=someSuffix]').doSomething(); In ASP.Net: This is particularly useful in ASP.Net when you may not want to specify clientidmode static, but still want to use [...]
jQuery – Bind to Document Instead of Elements for Dynamic Elements
When a DOM object is added after the DOM has loaded, the usual process of binding an event to a specific jQuery object may not be sufficient. E.g.: Normal binding [...]
jQuery – Get Ajax Post Error Details
$.post('status.ajax.php', {deviceId: id}) .done( function(msg) { ... } ) .fail( function(xhr, textStatus, errorThrown) { alert(xhr.responseText); }); http://stackoverflow.com/a/12116790/4669143
jQuery – Resize or Scroll Event Fire Only when Resize or Scroll Complete
Do something after jQuery resize or scroll is done, or has paused. Instead of firing the event every time the resize/scroll is detected, which is constantly during a resize/scroll operation, [...]
jQuery – Enable or Disable Inputs
$("input").prop('disabled', true); $("input").prop('disabled', false); This will automatically add/remove the 'disabled' property of the element. Source: http://stackoverflow.com/a/1414366/4669143
jQuery – Does an element exist?
if ($(selector).length) { // Exists } Source: http://stackoverflow.com/a/587408