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How are strings and text formatted in JavaScript?
This chapter introduces how to work with strings and text in JavaScript. JavaScript’s String type is used to represent textual data. It is a set of “elements” of 16-bit unsigned integer values (UTF-16 code units). Each element in the String occupies a position in the String. The first element is at index 0, the next at index 1, and so on.
How to create a new string in JavaScript?
Combines the text of two strings and returns a new string. Constructs a string from the specified sequence of Unicode values. This is a method of the String class, not a String instance. Splits a String object into an array of strings by separating the string into substrings. Extracts a section of a string and returns a new string.
When to use string literals in JavaScript?
You should use string literals unless you specifically need to use a String object, because String objects can have counterintuitive behavior. For example: A String object has one property, length, that indicates the number of UTF-16 code units in the string.
How to split a string into substrings?
Splits a String object into an array of strings by separating the string into substrings. Extracts a section of a string and returns a new string. Return the specified subset of the string, either by specifying the start and end indexes or the start index and a length.
What are the two types of string format?
There are two type of string format () method: public static String format (Locale loc, String form, Object… args)
What kind of string format does NSString use?
NSString uses a format string whose syntax is similar to that used by other formatter objects. It supports the format characters defined for the ANSI C function printf() , plus %@ for any object (see String Format Specifiers and the IEEE printf specification ).
Which is the best JavaScript object for formatting numbers?
The Intl/NumberFormat object is useful for formatting numbers, for example currencies. The Intl/Collator object is useful for comparing and sorting strings. For example, there are actually two different sort orders in German, phonebook and dictionary.