5 Basic JavaScript Methods || Most Important Methods

 

         1.  Check if a variable is an array:

            Ans .   Array.isArray(variable);

 

         2 . Convert a string to lowercase:

            Ans.   var lowercaseString = string.toLowerCase();

 

         3 . Generate a random number between a minimum and maximum value:

        Ans . var randomNumber = Math.floor(Math.random() * (max - min + 1)) + min;

 

         4. Get the current date and time:

          Ans . var currentDate = new Date();

 

        5.  Check if a string contains a specific substring:

        Ans .  var containsSubstring = string.includes(substring);