Deleting array elements in JavaScript - delete vs splice

Question

What is the difference between using the delete operator on the array element as opposed to using the Array.splice method?

For example:

myArray = [\         


        

Answer 1

delete: delete will delete the object property, but will not reindex the array or update its length. This makes it appears as if it is undefined:

splice: actually removes the element, reindexes the array, and changes its length.

Delete element from last

arrName.pop();

Delete element from first

arrName.shift();

Delete from middle

arrName.splice(starting index,number of element you wnt to delete);

Ex: arrName.splice(1,1);

Delete one element from last

arrName.splice(-1);

Delete by using array index number

 delete arrName[1];