The JavaScript String Objects provides various Functions and Constants / Properties. JavaScript String Functions allows us to perform many functionalities such as String comparison, string search, conversions, extraction, manipulation, case conversions etc.
TIP: Please refer String HTML Wrapper Methods article. It helps you to understand the HTML wrapper methods available in JavaScript Programming.
JavaScript String Properties
The following table will show you the list of Properties or Constants available in JavaScript String Object
| JavaScript String Properties | Description |
|---|---|
| constructor | It will return the String Constructor Function |
| length | This property will find the length of a given string |
| prototype | This will allow you to add references (Properties and methods) to the object |
JavaScript String Functions
The following table will show you the list of JavaScript String Functions available in String Object
| JavaScript String Functions | Description |
|---|---|
| chartAt() | It returns the Character at specified index position |
| charCodeAt() | It returns the Unicode of the Character at a specified index position |
| concat() | This method will help you to Join more than one string and return the new string |
| fromCharCode() | This JavaScript string function convert the Unicode values to Characters |
| indexOf() | Returns the index position of the first occurrence of a specified string. It will return -1 if the specified string not found |
| lastIndexOf() | This string function in JavaScript returns the index position of the last occurrence of a specified string. It will return -1 if the specified string not found |
| localeCompare() | It will check whether two strings are equivalent in the current locale |
| match() | Search for the specified value and returns the match |
| replace() | This JavaScript string function will search for a specified string and replace it with the new string value |
| search() | Search for a specified string and return the index position of the match. It will return -1 if the specified string not found |
| slice() | Extract the part of a string based on the specified indices |
| split() | It will Split the string into an Array of Substrings based on the separator we specified |
| substr() | This JavaScript string function will extract the characters from a string based on the specified Starting position and length |
| substring() | Extract the characters from a string based on the specified indices |
| toLocaleLowerCase() | It will convert the given string into Lowercase letters, by considering the host environment’s current locale |
| toLocaleUpperCase() | Convert the given string into Uppercase letters, by considering the host environment’s current locale |
| toLowerCase() | It will convert a given string into Lowercase letters |
| toString() | This JS string function will convert the given value into String Object |
| toUpperCase() | Convert the given string into Uppercase letters |
| trim() | It will remove the white spaces from both ends |
| ValueOf() | Returns the primitive value of the String Object |
