Function To Get Index From An Array Of Objects Having Certain Value Of Provided Property

My question is based on and similar to this one but a little bit different because property name will be variable. How do I create a function which will return me index of object h

Solution 1:

functionindexOf(propertyName,lookingForValue,array) {
    for (var i in array) {
        if (array[i][propertyName] == lookingForValue) {
            return i;
        }
    }
    return undefined;
}

Edit: Please note that I do the loose type check '==' on purpose since you are giving an integer to this function whereas in the array the value you search for is a string.

Solution 2:

I make a function which can be helpful to you. Check it.

functionGetindexOf(propertyName,lookingForValue,array){
var obj = array;
for(o in obj)
{
   if(obj[o][propertyName] == lookingForValue)
   {
       //return index;
       alert("You have request for "+o+" index");
   }
 }
}