How to remove duplicates by JavaScript taking advantage of the fact that the attributes of objects cannot be the same?

This article is about how JavaScript takes advantage of the fact that the properties of objects are not the same. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Take advantage of the fact that the attributes of objects are not the same (this method of array deduplication is problematic, not recommended, and needs to be improved)

Function unique (arr) {if (! Array.isArray (arr)) {console.log ('type errorships') Return} var arrry= []; var obj = {}; for (var I = 0; I < arr.length; iArr +) {if (! OBJ [arr [I]]) {arrry.push (arr [I]) obj [arr [I]] = 1} else {obj [arr [I]] + +}} return arrry } var arr = [1 unique (arr)) / / [1, true ", 15 false, undefined, null, NaN, 0," a ", {… }] / / the two true are removed directly, NaN and {} to thank you again for your reading! This is the end of this article on "how JavaScript can use the different properties of objects to be repeated". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it out for more people to see!