How to implement multiple filters using checkboxes?

Question

How do I implement multiple filters using checkboxes preferably using jQuery?

I have multiple div elements with their own data attributes which represent the difficulties of levels the user has completed.

I want to create a filter using checkboxes so that when they check a box for a specific difficulty which are completed, that difficulty is filtered out (hidden). If the user wants to filter multiple difficulties, then those difficulties are filtered out as well. If the user unchecks the box, then obviously it reappears.

Here is the div elements containing the data attributes. The data attributes which are set to true are the ones which are completed. E.g. (data-normal=true means normal difficulty is completed)

In this example, if I checked expert, then Level Two should become hidden. If I also checked hard, then both Level One and Level Two should be hidden.

Here are my checkboxes

      
        Hide Easy
      
      
        Hide Normal
      
      
        Hide Hard
      
      
        Expert

I did attempt this using a bool for each difficulty however if a box became unchecked despite other boxes being checked, it would unhide all the levels ignoring the fact other boxes are still checked.

If anything is unclear, please ask. Thanks

Edit: Here is the method I used however this does not work as when I uncheck one of the checkboxes, the div's reset and display all the levels ignoring the fact that the other boxes are still checked.

var hideCompleted = false;
var hideEasy = false;
var hideNormal = false;
var hideHard = false;
var hideExpert = false;

function mapCompletionFilter(filterBy){
  var $wrapper = $('.map-container');

  if(filterBy == "hideCompleted" && !hideCompleted){
    //$wrapper.find(".map-col-container[data-completed*=4]").hide();
    $wrapper.find(".map-col-container").filter('[data-completed="4"]').hide();
    hideCompleted = true;
  }
  else if(filterBy == "hideCompleted" && hideCompleted){
    $wrapper.find(".map-col-container[data-completed*=4]").show();
    hideCompleted = false;
  }

  if(filterBy == "hideEasy" && !hideEasy){
    //$wrapper.find(".map-col-container[data-completed*=4]").hide();
    $wrapper.find(".map-col-container").filter('[data-easy="true"]').hide();
    hideEasy = true;
  }
  else if(filterBy == "hideEasy" && hideEasy){
    $wrapper.find(".map-col-container").filter('[data-easy="true"]').show();
    hideEasy = false;
  }

  if(filterBy == "hideNormal" && !hideNormal){
    //$wrapper.find(".map-col-container[data-completed*=4]").hide();
    $wrapper.find(".map-col-container").filter('[data-normal*="true"]').hide();
    hideNormal = true;
  }
  else if(filterBy == "hideNormal" && hideNormal){
    $wrapper.find(".map-col-container").filter('[data-normal*="true"]').show();
    hideNormal = false;
  }

  if(filterBy == "hideHard" && !hideHard){
    //$wrapper.find(".map-col-container[data-completed*=4]").hide();
    $wrapper.find(".map-col-container").filter('[data-hard*="true"]').hide();
    hideHard = true;
  }
  else if(filterBy == "hideHard" && hideHard){
    $wrapper.find(".map-col-container").filter('[data-hard*="true"]').show();
    hideHard = false;
  }

  if(filterBy == "hideExpert" && !hideExpert){
    //$wrapper.find(".map-col-container[data-completed*=4]").hide();
    $wrapper.find(".map-col-container").filter('[data-expert*="true"]').hide();
    hideExpert = true;
  }
  else if(filterBy == "hideExpert" && hideExpert){
    $wrapper.find(".map-col-container").filter('[data-expert*="true"]').show();
    hideExpert = false;
  }
}

Buttons

$("#hideAllCompletedChkBox").click(function(){
  mapCompletionFilter("hideCompleted");
});
$("#hideEasyChkBox").click(function(){
  mapCompletionFilter("hideEasy");
});
$("#hideNormalChkBox").click(function(){
  mapCompletionFilter("hideNormal");
});
$("#hideHardChkBox").click(function(){
  mapCompletionFilter("hideHard");
});
$("#hideExpertChkBox").click(function(){
  mapCompletionFilter("hideExpert");
});

The main issue I am having is when I use multiple checkboxes for hiding each individual difficulty whereby if one of these checkboxes are unticked, all div's become unhidden.

Vasilij Altunin · Accepted Answer

Here, i prepare fiddle t show how it works - https://jsfiddle.net/skyr9999/nynbupwh/

I update you html a bit to make sure and test all works fine.

Here's is html:


    
        
            Easy, hard
        
    
    
        
            Easy, Normal, Expert
        
    
    
        
            Easy
        
    

    
        
            Normal
        
    

    
        
            Hard
        
    

    
        
            Expert
        
    

    
        
            None
        
    

    
        Hide Easy
    
    
        Hide Normal
    
    
        Hide Hard
    




    Expert

And js:

jQuery(document).ready(function ($) {

    updateVisible = function () {
        $("#elems>div.datadiv").each(function (index, value)
        {
            $(value).show();

            if ($(value).attr("data-expert") === "true")
            {
                if ($("#hideExpertChkBox").is(':checked'))
                {
                    $(value).hide();
                }
            }

            if ($(value).attr("data-hard") === "true")
            {
                if ($("#hideHardChkBox").is(':checked'))
                {
                    $(value).hide();
                }
            }


            if ($(value).attr("data-normal") === "true")
            {
                if ($("#hideNormalChkBox").is(':checked'))
                {
                    $(value).hide();
                }
            }


            if ($(value).attr("data-easy") === "true")
            {
                if ($("#hideEasyChkBox").is(':checked'))
                {
                    $(value).hide();
                }
            }
        });

    };

    $(document).on("change", "#hideEasyChkBox", function () {
        updateVisible();
    });

    $(document).on("change", "#hideNormalChkBox", function () {
        updateVisible();
    });

    $(document).on("change", "#hideHardChkBox", function () {
        updateVisible();
    });

    $(document).on("change", "#hideExpertChkBox", function () {
        updateVisible();
    });

});

So how it works - on checkbox change it call updateVisible() function. Than it get first div and show all it. After that it test if checkbox of filter checked and if div have atrr and if so, just hide it, if none attr set to true it just ingore such div. And then all repeated for all other divs.

How to implement multiple filters using checkboxes?

Answers (1)

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