javascript in a aray of objects how to remove one code example

Example 1: remove item from array by id

var myArr = [{id:'a'},{id:'myid'},{id:'c'}];
var index = arr.findIndex(function(o){
     return o.id === 'myid';
})
if (index !== -1) myArr.splice(index, 1);

Example 2: remove object in array javascript

//1
someArray.shift(); // first element removed
//2
someArray = someArray.slice(1); // first element removed
//3
someArray.splice(0, 1); // first element removed
//4
someArray.pop(); // last element removed
//5
someArray = someArray.slice(0, a.length - 1); // last element removed
//6
someArray.length = someArray.length - 1; // last element removed