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Method of Array Data Type 

 // CLASS TOPICS : FEW METHOD OF Array DATA TYPES  
   
   
   
 // reverse  
 // list = ["a","b","c","d"].reverse();  
 // console.log(list);  
 // it will reverse the array whether it is array of string, number whatever  
   
   
 // Pop  
 // list = [1,2,3,4];  
 // list.pop();  
 // console.log(list);  
 // it will remove the last element from array  
 // why we are writing .pop in next line?  
 // because pop will remove last element from orignal array it is going to return only the elemet it is removing not a new array.  
 // if we write list = [1,2,3,4].pop() then as i said it will return last element that is 4   
   
   
 // Slice  
 // list = [1,2,3,4,5].slice(0,4)  
 // console.log(list);  
 // same as in string  
   
   
 // To string   
 // list = [1,2,3,4].toString()  
 // console.log(list,typeof(list));  
 // convert array to a string  
   
   
 // Concat  
 // list = [1,2,3,4,5].concat(["a","B","c"],["d","e"])  
 // console.log(list);  
 // merge two or more arrays
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