CODEWITHSUNDEEP
javascript
sarsnake
sarsnake

Reputation: 27703

Removing element from JS array of objects

So I have something like this defined

var myList = [];  

//I populate it like this
myList.push({ prop1: value1, 
                      prop2: value2,
                      prop3: value3
});

Is it possible to remove items from the list, based on prop1 value w/o searching through the array?

Upvotes: 0

Views: 163

Answers (4)

Christopher
Christopher

Reputation: 774

Is it required that myList have index of integral type? Might you instead use key => value pairs - that is, an associative array with the value of prop1 as the key? How likely is it that prop1 will be unique? If it's unlikely, consider implementing a multimap.

Upvotes: 0

Šime Vidas
Šime Vidas

Reputation: 185883

Here you go:

myList = myList.filter( function ( obj ) {
    return obj.prop1 !== value;
});

where value is the value that you're testing against.

Live demo: http://jsfiddle.net/LBYfa/

So, if the value of the 'prop1' property is equal to the value that you're testing against, obj.prop1 !== value will evaluate to false and that element will be filtered out.

Upvotes: 1

Sudhir Bastakoti
Sudhir Bastakoti

Reputation: 100175

Does this help:

Array.prototype.remove = function(s) {
  var i = this.indexOf(s);
  if(i != -1) this.splice(i, 1);
}

Upvotes: 0

JAAulde
JAAulde

Reputation: 19550

No. You must loop over the array in some fashion, checking the properties of each object within, and perform removal as you hit them.

Upvotes: 1

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