How to remove multiple values from array using javascript?

Question

var array = [{
    name: "Mango",
    weight: "15gm"
}, {
    name: "Banana",
    weight: "10gm"
}, {
    name: "Apple",
    weight: "15gm"
}, {
    name: "Grapes",
    weight: "5gm"
}, {
    name: "Banana",
    weight: "15gm"
}];

I want to remove all other than Banana.

So the result array will be [{name:"Banana",weight:"10gm"},{name:"Banana",weight:"15gm"}]? — Luke
– Luke, Commented Jun 23, 2015 at 7:02
WoW! What a challenging requirement! What have you tried so far? — Tushar
– Tushar, Commented Jun 23, 2015 at 7:03

Luke · Accepted Answer · 2015-06-23 07:10:46Z

2

See here.

array.filter(function(x) {
    return x.name == "Banana";
});

So given this input:

[{"name":"Mango","weight":"15gm"},{"name":"Banana","weight":"10gm"},{"name":"Apple","weight":"15gm"},{"name":"Grapes","weight":"5gm"},{"name":"Banana","weight":"15gm"}]

We get this output:

[{"name":"Banana","weight":"10gm"},{"name":"Banana","weight":"15gm"}]

edited Jun 23, 2015 at 7:10

answered Jun 23, 2015 at 7:04

Luke

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3 Comments

Tushar Over a year ago

callback Function to test each element of the array. Invoked with arguments (element, index, array). Return true to keep the element, false otherwise.

Taken from the link in your answer

Luke Over a year ago

Yeah, exactly! So where the name is banana, the object will be included in the result array.

Felix Kling Over a year ago

I'm confused, did you doubt your own answer?

user3639680 · Accepted Answer · 2015-06-23 07:06:28Z

1

In above array when i remove array element using splice method my array length decremented by 1 so I have to consider index i. Following is a code to remove such objects.

for(var i=0;i<array.length;i++){
   if(array[i].name !== "Banana"){
       array.splice(i,1);
       i--;
   }
}

answered Jun 23, 2015 at 7:06

user3639680

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