Question

I have an Array of objects that looks like this but a little bigger:

var total =   [{ cost="6.00",  descrip="tuna"},{ cost="5.50",  descrip="cod"}];

I need a way of deleting specific full objects from the array. Is it possible to identify the index of an object, based on the value of a property? The splice method looks like it could work if so.

total.splice(x,1);

Otherwise perhaps I could use the below in someway? can the objects in an array be given names and used with this somehow:

delete total[];

Answer 1

Not really sure what your problem is. You first have to find which item you want to remove:

function findItem(arr) {
  for(var i = 0; i < arr.length; ++i) {
    var obj = arr[i];
    if(obj.cost == '5.50') {
      return i;
    }
  }
  return -1;
}

The findItem(total) function will return an index of an element matching cost == '5.50' condition (of course you can use another one). Now you know what to do:

var i = findItem(total);
total.splice(i, 1);

I’m assuming there is at least one object in the array matching the condition.