How to merge two arrays and remove the duplicate item?

Question

How can I merge two arrays and remove the elements that are repeated in such a way that it makes an array with all unique values?

Answer 1

You can try it like this:
function makeUnique(arr){

var arr1=arr.concat();

for(var i=0; i<arr1.length; ++i)

 { 

for(var j=i+1; j<arr1.length; ++j)

 { 

if(arr1[i] === arr1[j]) 

arr1.splice(j--, 1); 

} } 

return arr1;

 }

var a=[“apple”,”banana”];

var b=[“banana”,”pineapple”];

makeUnique(a.concat(b));

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