How to remove duplicates in arraylist in javascript..?

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Need to remove duplicates in arraylist in javascript...

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Posted 26-Jul-18 21:28pm

venkatesh (chennai)

Updated 26-Jul-18 22:31pm

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venkatesh (chennai) 27-Jul-18 6:10am

// Removed Duplicate values
var result = array.filter(function (el, i, x) {
return x.some(function (obj, j) {
return obj.name === el.name && (x = j);
}) && i == x;
});

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Pete O'Hanlon · Answer 1 · 2018-07-26T22:32:00

The problem you have here is that you are just pushing the name. More importantly, you are going to face an issue where what you are trying to find is a complex type so you are going to have to roll your own implementation. Fortunately, that's a pretty trivial thing to do. First of all, you would simply add your own version of indexOf (something like this will do):

JavaScript

Array.prototype.complexIndexOf = function(type) {
  for (var x = 0; x < this.length; x++) {
    if (this[x].id === type.id && this[x].name === type.name)
	  return i;
  }
  return -1;
}

With this prototype in place, you simply change the condition in your for loop to: