However, when we are working to use consistent syntax within project programming files, this can be difficult to maintain throughout a codebase. In the way we combine single and double quotes, we can control the display of quotation marks and apostrophes within our strings. "We're safely using an apostrophe in double quotes." Using the Alternate String SyntaxĪn easy way to get around isolated cases of potentially broken strings is to use the opposite string syntax of the one you’re currently using.įor example, apostrophes in strings built with ". In order to avoid an error being thrown in these situations, we have a few options that we can use: The same would apply to attempting to use quotes in a double-quoted string.
The easiest way to view the output of a string is to print it to the console, with console.log(): console.log("This is a string in the console.") Template literals use the backtick (also known as a grave accent) and work the same way as regular strings with a few additional bonuses, which we will cover in this article. The third and newest way to create a string is called a template literal. As there is no convention or official preference for single- or double-quoted strings, all that matters is keeping consistent within project program files. Strings using double quotes and single quotes are effectively the same. The type of quote used must match on both sides, however it is possible that all three styles can be used throughout the same script. In JavaScript, there are three ways to write a string - they can be written inside single quotes ( ' '), double quotes ( " "), or backticks ( ` `). Creating and Viewing the Output of Strings
Javascript string how to#
In this article, we’re going to learn how to create and view the output of strings, how to concatenate strings, how to store strings in variables, and the rules of using quotes, apostrophes, and newlines within strings in JavaScript. Strings in JavaScript are primitive data types and immutable, which means they are unchanging.Īs strings are the way we display and work with text, and text is our main way of communicating and understanding through computers, strings are one of the most fundamental concepts of programming to be familiar with. In the above program, the same quote is included using \.A string is a sequence of one or more characters that may consist of letters, numbers, or symbols. For example, const name = 'My name is \'Peter\'.' You can use the backslash escape character \ to include special characters in a string. If you want to learn more about the string conversion, visit JavaScript Type Conversion. The String() function is used to convert various data types to strings. Searches for a string and returns a position of a matchĮxample: JavaScript String Methods const text1 = 'hello' Ĭonst result1 = ncat(' ', text2) Searches for a string and returns a boolean value Returns the character at the specified indexĬonverts the string to an array of strings
Here are the commonly used JavaScript String methods: Using string objects slows down the program. Note: It is recommended to avoid using string objects. You can also create strings using the new keyword. To find the length of a string, you can use built-in length property. For example, // using the + operatorĬonst message1 = 'This is a long message ' +Ĭonst message2 = 'This is a long message \ To use a multiline string, you can either use the + operator or the \ operator. In JavaScript, a and A are treated as different values. That means in JavaScript, the lowercase and uppercase letters are treated as different values.
However, you can assign the variable name to a new string. That means the characters of a string cannot be changed. Another way is to use the method charAt().One way is to treat strings as an array.You can access the characters in a string in two ways. For example, const name = 'My name is 'Peter'.' // error However, the quote should not match the surrounding quotes. For example, const name = 'My name is "Peter".' You can also write a quote inside another quote. There are three ways you can use quotes.Ĭonst result = `The names are $ as shown above. In JavaScript, strings are created by surrounding them with quotes. JavaScript string is a primitive data type that is used to work with texts.