How to remove an array element using a specific value

Question

Suppose I have an array structured like this:

{ q1: true, q2: false, q3: false, q4: true, q5:true }

Is there a way to remove all the elements that has "false" for a value in AngularJS?

I tried using splice() by getting the index number, with no luck. Now I'm looking for a way where I don't have to use a specific index number.

Any help would be appreciated. Thank you.

shyammakwana.me · Accepted Answer · 2016-07-29 11:50:17Z

1

Simple JavaScript approach

var r = {
  q1: true,
  q2: false,
  q3: false,
  q4: true,
  q5: true
};

for (a in r) {
  if (!r[a]) {
    delete r[a]
  }
}

console.log(r);

answered Jul 29, 2016 at 11:50

shyammakwana.me

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1 Comment

Just what I was looking for. Thank you. It works great. :)

Iso · Accepted Answer · 2016-07-29 11:48:22Z

0

This is not an array, this is an object. You can use this function to remove every key whose value is falsy with:

angular.forEach(obj, function (val, key) {
  if (!val) {
    delete obj[key];
  }
});

answered Jul 29, 2016 at 11:48

Iso

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pishpish · Accepted Answer · 2016-08-08 11:24:02Z

0

You supplied an object, not an array. Array.prototype.splice works with arrays, not objects.

To filter out unwanted values from an array, you should use Array.prototype.filter.

[true, false, false, true, true].filter(function(el){ return el; });
// returns [true, true, true]

answered Aug 8, 2016 at 11:24

pishpish

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