get first character of string javascript

This article mainly introduces how the JavaScript language supports the Unicode Character Set. For more information, see what I will share with you next month, and the support of the JavaScript language. The following is the lecture for this sharing.

Last month, I did a share, detailing the Unicode character set and the JavaScript language's support for it. Here is the lecture on this share. --> --> First, what is Unicode? Unicode stems from a very simple idea: to include all the characters

JavaScript to find the first non-repeated character in the string, javascript string This algorithm is for your reference only. You can only express it with the simplest idea. // Find the first non-repeated character in the string // firstUniqueChar

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

The history of JSIn the 1995 of the last century, Netscape was the most famous first generation Internet company in the Web era with its navigator browser.Because Netscape wanted to be able to add some dynamic effects to the static HTML page, it was

JavaScript all things in are objects: strings, numbers, arrays, functions ... In addition, JavaScript allows custom objects to be customized.JavaScript objectsJavaScript provides multiple built-in objects, such as String, Date, Array, and so on.

MySQL character set ultimate solution [posting]   MySQL, an open-source database, has always been the first choice for small and medium-sized enterprises to build Web applications. In particular, It is a golden partner to cooperate with PHP and

JavaScript provides functions to find substrings in strings indexof (), LastIndexOf (), search (), and replacement functions for strings replace (), which are not implemented in array object array. In order for array to support the above method,

1th Chapter Essence Some of the features of JavaScript feature a lot more trouble than they are worth. Some of these features are because the specification is so imperfect that it can cause portability problems; Some features can lead to the

In-depth exploration of JavaScript String objects This article gives you a detailed introduction to the String object in javascript, the definition method, instance attributes, and instance methods. It is very detailed and comprehensive. I would