jquery - define that a loading effect only appear ONCE

Question

On click on a certain icon, I add to the DOM a loading message. The problem is that if the user clicks twice (while the final message is loading, he sees this message twice....).

How to only prevent the appearance of a second "loading..." per screen ? I never want more than one at once.

$(document).on('page:change', function () {

    //show loading message

    $("#icon1, #icon2, #icon3").click(function(e) {

      e.preventDefault();

      $("Loading ...")

      .insertAfter( $( "#icon1" ) );

    });    

  });

Note: some users suggested to use .one: I don't think it works because it means I can only click once then nothiung happens. It is not what I want to do. i want that WHILE a user sees "loading..", he can"t sees another "loading..." but he can still click onc,e sees the "loading...", then when the "loading.." disappears he can click and see it appear again.

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Answer 1

You can use a boolean variable, and check if it is true or false

$(document).on('page:change', function () {
    //show loading message
    var isLoading = false;
    $("#icon1, #icon2, #icon3").click(function(e) {
      if(isLoading == true) return;
      isLoading = true;
      e.preventDefault();
      $("Loading ...")
      .insertAfter( $( "#icon1" ) );

     //After finishing loading
     isLoading = false;
    });    
  });

jquery - define that a loading effect only appear ONCE

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