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JavaScript: What is the difference between shift() and unshift() array methods?

Definition: shift(): this method is use to remove first element of an array and returns new array. unshift(): this array method is used to add one or more arrays in existing array list and returns new array. usages of shift(): [crayon-6767932f60ee9065696031/] usages of unshift(): [crayon-6767932f60ef0289634224/]  

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Array functions in javascript

Javascript array functions 1. toString() - convert array to string [crayon-6767932f612df151148908/] 2. pop() - remove/delete last element from an array [crayon-6767932f612e4031893071/] 3. push() - add/insert element at the top [crayon-6767932f612e6266626455/] 4. shift() - remove/delete first element from an array [crayon-6767932f612e9810934961/] 5. unshift() - add/insert element at first position [crayon-6767932f612eb227339505/] 6. concat() - merged(concat) existing array and create new array [crayon-6767932f612ee034257008/] 7. slice() -

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