In this article, we will learn JavaScript Strings and their properties and methods with a brief description. JavaScript Strings are used for storing and manipulating text content. It can contain zero or more characters within single or double quotes, like “Geeksforgeeks” or ‘Geeksforgeeks’.
Syntax:
String(object)
Example: In this example, we will return the length of a string.
Javascript
function stringLength() {
const str = "GeeksforGeeks";
console.log("String Length: " + str.length);
}
stringLength();
|
Output:
String Length: 13
Example: In this example, we will return the Date() object’s string value.
Javascript
const currentDate = new Date()
const currentDate_String = currentDate.toString()
console.log("Date Object's String Value: " + currentDate_String)
|
Output
Date Object's String Value: Wed Sep 06 2023 21:12:54 GMT+0000 (Coordinated Universal Time)
The complete list of JavaScript Strings has listed below:
JavaScript String Constructor: In JavaScript, a constructor gets called when an object is created using the new keyword.
| String() |
Convert the value of an object to a string. |
|
JavaScript String Properties: A JavaScript property is a member of an object that associates a key with a value. There is no static property in the string only instance property.
- Instance Property: An instance property is a property that has a new copy for every new instance of the class.
| length |
Find out the size of that object |
|
| constructor |
Return the string constructor function for the object. |
|
JavaScript String Methods: JavaScript methods are actions that can be performed on objects. There are two types of String methods in JavaScript.
- Static Method: If the method is called using the string class itself then it is called a static method.
| fromCharCode() |
Create a string from the given sequence of UTF-16 code units. |
|
| fromCodePoint() |
Return a string or an element for the given sequence of code point values (ASCII value). |
|
- Instance Method: If the method is called on an instance of a string then it is called an instance method.
| at() |
Find the character at the specified index. |
|
| anchor() |
Creates an anchor element that is used as a hypertext target. |
|
| charAt() |
Returns that character at the given index of the string. |
|
| charCodeAt() |
Returns a Unicode character set code unit of the character present at the index in the string. |
|
| codePointAt() |
Return a non-negative integer value i.e, the code point value of the specified element. |
|
| concat() |
Join two or more strings together in JavaScript. |
|
| endsWith() |
Whether the given string ends with the characters of the specified string or not. |
|
| includes() |
Returns true if the string contains the characters, otherwise, it returns false. |
|
| indexOf() |
Finds the index of the first occurrence of the argument string in the given string. |
|
| lastIndexOf() |
Finds the index of the last occurrence of the argument string in the given string. |
|
| localeCompare() |
Compare any two elements and returns a positive number |
|
| match() |
Search a string for a match against any regular expression. |
|
| matchAll() |
Return all the iterators matching the reference string against a regular expression. |
|
| normalize() |
Return a Unicode normalization form of a given input string. |
|
| padEnd() |
Pad a string with another string until it reaches the given length from rightend. |
|
| padStart() |
Pad a string with another string until it reaches the given length from leftend. |
|
| repeat() |
Build a new string containing a specified number of copies of the string. |
|
| replace() |
Replace a part of the given string with some another string or a regular expression |
|
| replaceAll() |
Returns a new string after replacing all the matches of a string with a specified string/regex. |
|
| search() |
Search for a match in between regular expressions and a given string object. |
|
| slice() |
Return a part or slice of the given input string. |
|
| split() |
Separate given string into substrings using a specified separator provided in the argument. |
|
| startsWith() |
Check whether the given string starts with the characters of the specified string or not. |
|
| substr() |
Returns the specified number of characters from the specified index from the given string. |
|
| substring() |
Return the part of the given string from the start index to the end index. |
|
| toLowerCase() |
Converts the entire string to lowercase. |
|
| toLocaleLowerCase() |
Returns the calling string value converted to a lowercase letter. |
|
| toLocaleUpperCase() |
Returns the calling string value converted to a uppercase letter. |
|
| toUpperCase() |
Converts the entire string to uppercase. |
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| toString() |
Return the given string itself. |
|
| trim() |
Remove the white spaces from both ends of the given string. |
|
| trimEnd() |
Remove white space from the end of a string. |
|
| trimStart() |
Remove white space from the start of a string. |
|
| valueOf() |
Return the value of the given string. |
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Last Updated :
07 Nov, 2023
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