Function to detect if specific value exists in an array of objects in javascript

Question

I have an array that looks like this:

userInterests [
  {
    "Status": "Interested",
    "$id": "-JncIGjhkuEx1Hq6Lzax",
    "$priority": null
  }
  {
    "Status": "Interested",
    "$id": "-TDIEGjhkuEx1Hq6Lzax",
    "$priority": null
  }
]

I need a boolean function that returns true or false if the id matches, so a function like this:

function isAnIDInArray(id) {

}

so that

isAnIDInArray(-JncIGjhkuEx1Hq6Lzax);

Would return true

http://jsfiddle.net/adeneo/k6yucv9h/1/ – adeneo Apr 26 '15 at 23:07 — adeneo, Apr 26 '15 at 23:07

score 1 · Accepted Answer · answered Apr 26 '15 at 23:09

Your function have to loop through all objects in the array and check evry id. So something like this:

function isAnIDInArray(id, array) {
    var i;
    for(i = 0; i < array.length; i++) {
        If(array[i].$id == id) {
            return true;
        }
    }
    return false;
}

Not sure if you can use '$' in javascript syntax tho.

Function to detect if specific value exists in an array of objects in javascript

1 Answers1