Jquery Add Class To This Clicked Element

Question

I generate several rows with tasks. Now, each task can be marked as complete by clicking on a span. I do that with an ajax request. Here's the html: &

Solution 1:

try using following code, This is a prefered way jQuery

JS

$(".mark-as-complete").on("click", function(){
    $(this).addClass("completed);
});

$(".mark-as-complete").on("click", function(){ will trigger click function on span click

within that click function we are checking $(this) which will add class to clicked span.

Solution 2:

The context of element is lost in ajax call. you can use context option in ajax to set any elements context:

context:this,

Ajax call snippet:

$.ajax({
   type: "post",
   context:this,
   url: "assets/js/ajax/mark-as-incomplete.php",
   data: { 'task': task },
   success: function() {
       $(this).removeClass("completed-task");
   }
});

Solution 3:

You say you GENERATE the rows.

If you generate them on the client you need to delegate. Take the nearest static element to the generated rows, for example the table:

<table id="markTable">

then delegate like this:

$(function() {
  $("#markTable").on("click",".to-heal",function() {
    $(this).addClass("completed-task");
  });
  $("#markTable").on("click",".completed-task",function() {
    $(this).removeClass("completed-task");
  });
});

or just

$(function() {
  $("#markTable").on("click",".to-heal",function() {
    $(this).toggleClass("completed-task");
  });
});

UPDATE:

$(function() {
  $(".to-heal").on("click",function() {
    var task = $(this).attr("data-task");
    var completed = $(this).hasClass("completed-task");
    $.ajax({
      type: "post",
      context:this,
      url: "assets/js/ajax/mark-as-"+(completed?"in":"")+"complete.php",
      data: { 'task': task },
      success: function() {
        $(this).toggleClass("completed-task",!$(this).hasClass("completed-task"));
      }
    });
  });
});

or have ONE php that takes the parameter complete or incomplete

Solution 4:

Try to use this

$('span').click(function(){
    $(this).addClass("completed");
});

When you use an selector it search for the selected class or id and it will apply the property to all the existed selectors.

Html5 Developer

Jquery Add Class To This Clicked Element

Solution 1:

Solution 2:

Solution 3:

Solution 4:

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