javascript check if list contains string

javascript: Arrays Arrays are the most common data structures in the programming world. Any programming language contains an array, but the form is slightly different. Arrays are built-in types in a programming language and are often highly

　 Function overload and type check A common feature of other object-oriented languages (such as Java) is the ability to "overload" functions: pass them to different numbers or types of parameters, and the functions perform different operations.

Summary of little knowledge about JavaScript performance optimization, and javascript Performance Optimization With the development of the network, network speed and machine speed, more and more websites use a variety of client technologies. Ajax is

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,

This article introduces the JavaScript language to professional programmers. It is a small language. This article introduces the JavaScript language to professional programmers. It is a small language. If you are familiar with other programming

# The JavaScript authoritative guide notes-part 1thDescription: Printed version: April 2012 1th Edition, September 2016, 17th time printing.The style of the book and "effective Java" very similar, recommended.This note is recorded in reverse order.--

EXEC () retrieves the specified value in the string, returns a value that is found, and returns null if no match is found: The main regexp pattern matching method is exec (), similar to the match method for the string object described in the

In JavaScript, all objects except the five primitive types (numbers, strings, Boolean values, null, and undefined) are objects. Therefore, I don't know how to continue learning objects? This article will share with you the in-depth study and summary

Introduction This article introduces the JavaScript language to professional programmers. It is a small language. If you are familiar with other programming languages, this article is not that hard to understand. JavaScript is not Java. They are two

JavaScript performance issues are not to be underestimated, this requires our developers to write JavaScript program more attention to some details, this article is a very detailed introduction of JavaScript performance optimization of knowledge