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String.prototype.substring () - JavaScript | MDN

Thu, 25 Jun 2026 20:05:00 GMT

The substring() method of String values returns the part of this string from the start index up to and excluding the end index, or to the end of the string if no end index is supplied.

String.prototype.substr () - JavaScript | MDN

Mon, 22 Jun 2026 12:09:00 GMT

The substr() method of String values returns a portion of this string, starting at the specified index and extending for a given number of characters afterwards.

String - JavaScript | MDN

Thu, 25 Jun 2026 20:55:00 GMT

Description Strings are useful for holding data that can be represented in text form. Some of the most-used operations on strings are to check their length, to build and concatenate them using the + and += string operators, checking for the existence or location of substrings with the indexOf() method, or extracting substrings with the substring() method. Creating strings Strings can be ...

substring - XPath - MDN

Wed, 24 Jun 2026 10:34:00 GMT

The position within string the substring begins length Optional The length of the substring. If omitted, the returned string will contain every character from the start position to the end of string. Return value A string. Description As in other XPath functions, the position is not zero-based. The first character in the string has a position ...

Useful string methods - Learn web development | MDN

Sat, 20 Jun 2026 22:20:00 GMT

Useful string methods Previous Overview: Dynamic scripting with JavaScript Next Now that we've looked at the very basics of strings, let's move up a gear and start thinking about what useful operations we can do on strings with built-in methods, such as finding the length of a text string, joining and splitting strings, substituting one character in a string for another, and more.

String.prototype.sub () - JavaScript - MDN

Tue, 23 Jun 2026 11:46:00 GMT

The sub() method of String values creates a string that embeds this string in a _{element (_str), which causes this string to be displayed as subscript.}

substring-after - XPath - MDN

Sat, 20 Jun 2026 19:00:00 GMT

The substring-after function returns a string that is the rest of a given string after a given substring.

Numbers and strings - JavaScript | MDN - MDN Web Docs

Thu, 25 Jun 2026 05:53:00 GMT

This chapter introduces the two most fundamental data types in JavaScript: numbers and strings. We will introduce their underlying representations, and functions used to work with and perform calculations on them.

Handling text — strings in JavaScript - Learn web development - MDN

Tue, 23 Jun 2026 18:06:00 GMT

Next, we'll turn our attention to strings — this is what pieces of text are called in programming. In this article, we'll look at all the common things that you really ought to know about strings when learning JavaScript, such as creating strings, escaping quotes in strings, and joining strings together.

Regular expressions - JavaScript | MDN

Thu, 25 Jun 2026 14:36:00 GMT

Regular expressions are patterns used to match character combinations in strings. In JavaScript, regular expressions are also objects. These patterns are used with the exec() and test() methods of RegExp, and with the match(), matchAll(), replace(), replaceAll(), search(), and split() methods of String. This chapter describes JavaScript regular expressions. It provides a brief overview of each ...