This question already has answers here: Get all unique values in a JavaScript array (remove duplicates) (83 answers) Closed 4 years ago. I have a very simple JavaScript array that may or may not contain duplicates. var names = [“Mike”,”Matt”,”Nancy”,”Adam”,”Jenny”,”Nancy”,”Carl”]; I need to remove the duplicates and put the unique values in a new array. … Read more
I have an array of numbers that I need to make sure are unique. I found the code snippet below on the internet and it works great until the array has a zero in it. I found this other script here on Stack Overflow that looks almost exactly like it, but it doesn’t fail. So … Read more
With JavaScript 1.6 / ECMAScript 5 you can use the native filter method of an Array in the following way to get an array with unique values: function onlyUnique(value, index, self) { return self.indexOf(value) === index; } // usage example: var a = [‘a’, 1, ‘a’, 2, ‘1’]; var unique = a.filter(onlyUnique); console.log(unique); // [‘a’, 1, 2, ‘1’] Run code snippetExpand … Read more
