Strings | codingHabits

📄️ Access character at index in string

Use charAt() to get a character at the specified index in the string.

Strings in JavaScript can be enclosed in Single quotes 'hello', Double quotes "Hello" and (from ES2015, ES6) in

The method charCodeAt retrieves the Unicode character code of a single character:

To compare strings alphabetically, use localeCompare(). This returns a negative value if the reference string is

To detect whether a parameter is a primitive string, use typeof:

If your string is enclosed (i.e.) in single quotes you need to escape the inner literal quote with backslash \

The most "popular" way of reversing a string in JavaScript is the following code fragment, which is quite common:

Use .split to go from strings to an array of the split substrings:

To search for a string inside a string, there are several functions:

JavaScript has native conversion from Number to its String representation for any base from 2 to 36.

All JavaScript strings are unicode!

Use .slice() to extract substrings given two indices:

To trim whitespace from the edges of a string, use String.prototype.trim:

Say you have a `` and you want to retrieve info about the number of: