How to get the data attributes of an element using JavaScript ?

Given an HTML document and the task is to select the data attributes of an element using JavaScript. There are few methods to solve this problem which are discussed below:

Approach:

  • First, select the element which is having data attributes.
  • We can either use dataset property to get access to the data attributes or use .getAttribute() method to select them by specifically typing their names.

Example 1: This example uses dataset property to get the data attributes of an element.



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<!DOCTYPE HTML> 
<html> 
  
<head> 
    <title> 
        How to get the data attributes of
            an element using JavaScript ?
    </title>
</head> 
  
<body align = "center"> 
      
    <h1 style = "color:green;" > 
        GeeksForGeeks 
    </h1> 
      
    <p id = "GFG_UP" style = 
            "font-size: 15px; font-weight: bold;"> 
    </p>
      
    <span data-typeId="123" data-name = "name" 
            data-points="10" data-important="true"
            id="span">
        This is the Element.
    </span>
      
    <br><br>
      
    <button onclick = "GFG_Fun()">
        click here
    </button>
      
    <p id = "GFG_DOWN" style = 
        "font-size: 20px; font-weight: bold; color:green;"> 
    </p>
      
    <script> 
        var el_up = document.getElementById('GFG_UP');
        var el_down = document.getElementById('GFG_DOWN');
        var input = document.getElementById('span');
          
        el_up.innerHTML = "Click on the button to get "
                    + "the data attributes of element.";     
          
        function GFG_Fun() {
            var jsonData = JSON.stringify({
                id: parseInt(input.dataset.typeid),
                points: parseInt(input.dataset.points),
                important: input.dataset.important, 
                dataName: input.dataset.name
            });
            el_down.innerHTML = jsonData;
        }
    </script> 
</body> 
  
</html>

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Output:


    

  • 
 Before clicking on the button:
    


    • 

  • 
 After clicking on the button:
    


    • 



Example 2: This example uses .getAttribute() method to get the data attributes of an element. 











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<!DOCTYPE HTML>   


<html>   


  


<head>   


    <title>   


        How to get the data attributes of 


        an element using JavaScript ? 


    </title> 


</head>   


  


<body align = "center">   


      


    <h1 style = "color:green;" >   


        GeeksForGeeks   


    </h1>  


      


    <p id = "GFG_UP" style =  


            "font-size: 15px; font-weight: bold;">  


    </p> 


      


    <span data-typeId="123" data-name = "name"


            data-points="10" data-important="true"


            id="span"> 


        This is the Element. 


    </span> 


      


    <br><br> 


      


    <button onclick = "GFG_Fun()"> 


        click here 


    </button> 


      


    <p id = "GFG_DOWN" style =  


        "font-size: 20px; font-weight: bold; color:green;">  


    </p> 


      


    <script>   


        var el_up = document.getElementById('GFG_UP'); 


        var el_down = document.getElementById('GFG_DOWN'); 


        var input = document.getElementById('span'); 


          


        el_up.innerHTML = "Click on the button to get " 


                    + "the data attributes of element.";      


          


        function GFG_Fun() { 


            var jsonData = JSON.stringify({ 


                id: parseInt(input.getAttribute('data-typeId')), 


                points: parseInt(input.getAttribute('data-points')), 


                important: input.getAttribute('data-important'),  


                dataName: input.getAttribute('data-name') 


            }); 


            el_down.innerHTML = jsonData; 


        } 


    </script>   


</body>   


  


</html> 



















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Output:


    

  • 
 Before clicking on the button:
    


    • 

  • 
 After clicking on the button:
    


    • 




          
          
          
          

            

    

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