How to convert hyphens to camel case in JavaScript ?

Given a string containing hyphens (-) and the task is to convert hyphens (-) into camel case of a string using JavaScript.

Approach:

Store the string containg hyphens into variable.
Then use the RegExp to replace the hyphens and make the first letter of words as upperCase.

Example 1: This example converts the hyphens (‘-‘) into camel case by using RegExp and replace() method.

<!DOCTYPE HTML>  
<html>  
    <head>  
        <title>  
            How to convert hyphens to  
            camel case in JavaScript ? 
        </title> 
    </head>  
      
    <body style = "text-align:center;">  
          
        <h1 style = "color:green;" >  
            GeeksForGeeks  
        </h1>  
          
        <p id = "GFG_UP" style = 
            "font-size: 16px; font-weight: bold;"> 
        </p> 
          
        <button onclick = "gfg_Run()">  
            Click here 
        </button> 
          
        <p id = "GFG_DOWN" style = 
            "color:green; font-size: 20px; font-weight: bold;"> 
        </p> 
          
        <script> 
            var el_up = document.getElementById("GFG_UP"); 
            var el_down = document.getElementById("GFG_DOWN"); 
              
            var str = "this-is-geeks-for-geeks"; 
              
            el_up.innerHTML = str; 
              
            function gfg_Run() { 
                el_down.innerHTML = str.replace(/-([a-z])/g,  
                    function (g) { return g[1].toUpperCase(); }); 
            }          
        </script>  
    </body>  
</html> 

Output:

Before clicking on the button:
After clicking on the button:

Example 2: This example is quite similar to previous one and converts the hyphens (‘-‘) to camel case by using RegExp and replace() method.

<!DOCTYPE HTML>  
<html>  
    <head>  
        <title>  
            How to convert hyphens to  
            camel case in JavaScript ? 
        </title> 
    </head>  
      
    <body style = "text-align:center;">  
          
        <h1 style = "color:green;" >  
            GeeksForGeeks  
        </h1>  
          
        <p id = "GFG_UP" style = 
            "font-size: 16px; font-weight: bold;"> 
        </p> 
          
        <button onclick = "gfg_Run()">  
            Click here 
        </button> 
          
        <p id = "GFG_DOWN" style = 
            "color:green; font-size: 20px; font-weight: bold;"> 
        </p> 
          
        <script> 
            var el_up = document.getElementById("GFG_UP"); 
            var el_down = document.getElementById("GFG_DOWN"); 
              
            var str = "-a-computer-science-portal-for-geeks"; 
              
            el_up.innerHTML = str; 
              
            function gfg_Run() { 
                el_down.innerHTML = str.replace(/-([a-z])/g,  
                    function (m, s) { 
                        return s.toUpperCase(); 
                    }); 
            }          
        </script>  
    </body>  
</html> 

Output:

Before clicking on the button:
After clicking on the button:

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