javascript remove whitespace from beginning and end of string

1. JavaScript overview 2. JavaScript Introduction method 3. JavaScript Language Specification 4. JavaScript Language Basics 5. JavaScript data type 6. JavaScript operators 7. JavaScript Process Control 8. JavaScript

JavaScript Overview of JavaScript history 1992 Nombas developed the embedded scripting language for C-minus-minus (c--), which was originally bound to Cenvi software, and renamed it Scriptease (the language that the client executes).

First, the difference between slice, substr, and substring in JavaScript:1:string.slice (start,end): a new string. Includes the string Stringobject all characters from start (including start) to end (not including end).2:string.substring (Start,end)

First, JavaScript introduction method1. Write code in script tag2. Introduction of additional JS filesSecond, JavaScript language specification1. CommentsThis is a single-line comment/*This is a multi-line comment*/2, TerminatorThe language in

PhpThe regular expression contains three elements: quantifier, metacharacters, modifierQuantifiersSyntax description Matches anything that contains at least one leading string Matches any of 0 or more leading strings? Matches any of 0

Core code: Copy Code code as follows: /** * Jscript.string Package * This package contains utility functions for working with strings. */ if (typeof JScript = = ' undefined ') { JScript = function () {} } jscript.string =

JavaScript Array (Array) objectThe purpose of an array object is to use a separate variable name to store a series of values.What is an array?An array object uses a separate variable name to store a series of values.If you have a set of data (for

a regular expression can: test a pattern of a string. For example, you can test an input string to see if there is a phone number pattern or a credit card number pattern in the string. This is called data validation? Replace text. You can use a

String objects are commonly used to hold data in the form of text.There are two methods of conversion:String (s) new string (s)The string object methods are:CharAt () charCodeAt () concat () indexOf () lastIndexOf () match () repeat () replace ()

Basic Tutorials | tutorials | regular Expressions | regular Directory Objective of this article How to use this tutorial What exactly is a regular expression? Entry Testing Regular Expressions Metacharacters Word Escape