find duplicate string in array javascript

Strings and arrays are commonly used in programming. Therefore, the programming language uses String and Array as the basic types, it also provides many string and array methods to simplify string operations. JavaScript also provides the String and

Two ways for JavaScript to judge duplicate content in an array by Fungleo prefaceIn general, we may give the array the weight, the operation is not complex, the execution of a loop is. Now, what I'm going to do is to determine if there are duplicate

There are two ways to create arrays in array creation JavaScript, the first of which is to use the array constructor:varARR1 =NewArray ();//create an empty arrayvarARR2 =NewArray (20);//create an array with 20 itemsvarARR3 =NewArray ("Lily", "Lucy",

In general, the interview process has gained a lot. The main reason is to identify the gap between yourself and the narrow knowledge. It is necessary to crack down on self-confidence. Here is a comprehensive summary about the de-duplication of

In general, the interview process has gained a lot. The main reason is to identify the gap between yourself and the narrow knowledge. It is necessary to crack down on self-confidence. Here is a comprehensive summary about the de-duplication of

$.each (Array, [callback]) traversal Unlike the $.each () method of the JQuery object, this method can be used to sample any object (not just an array, oh ~). The callback function has two parameters: the first is the index of the member or array

Remove Duplicate LettersGiven a string which contains only lowercase letters, remove duplicate letters so this every letter appear once and only O nCE. You must make sure your result are the smallest in lexicographical order among all possible

Personal Summary:1. Memory recovery mechanism-tag clear algorithm: Starting from the root (global variable) to detect descendant variables, any root variables can not reach the variable will be marked as memory garbage.This is the third chapter of

With the development of the network and the speed of the machine, more and more websites use the rich client technology. Now Ajax is one of the most popular ways. JavaScript is an interpreted language, so it can't reach the level of C/java and so on,

The  jquery array processing is very convenient and powerful, and one-step encapsulates a number of functions that are not accessible to native JS arrays. Here's a look at the power of the jquery array.   $.each (Array, [callback]) traversal The $