如何在基于数组javascript的索引上获取价值

Question

how to get value on array javascript based index?

example :

var my_array = [1,2,3,4,5,6,7,8,9,10];

how to implements logic like below :

 [offset...length]

 [2..3] ==> result [3,4,5]
 [3..7] ==> result [4,5,6,7,8,9,10]     

how do that on javascript?

Answer 1

Certainly Mr.fuyushimoya is right - You can use the : JavaScript Array slice() Method

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Definition and Usage:-
The slice() method returns the selected elements in an array, as a new array object.

The slice() method selects the elements starting at the given start argument, and ends at, but does not include, the given end argument.

Note: The original array will not be changed.

For more information , please refer this link.

Example:

 var origin = [1,2,3,4,5,6,7,8,9,10]; var start = 3, end = 7, offset = 7; // If you want values from index 3 to index 7 console.log(origin.slice(start, end + 1)); // If you want values from index 3 and the following 6 values. console.log(origin.slice(start, start + offset + 1));