// Array :- It is collection more the single value inside an variable // concat :- It return a new array by merging two or more than two arrays. // e.g. let try to concat an array along with element directly if it is possible const lang1 = ["python","java"]; const lang2 = ["script" , "tailwind"] const output =lang1.concat(lang2 ,"Github" ,8);//added the element directly console.log(output);//It only create new array and not change the original arrays console.log(lang1);//not change like me console.log(lang2);