JavaScript String Methods

JavaScript String Methods Description
charAt() Returns the character at the specified index
charCodeAt() Returns the Unicode of the character at the specified index
concat() Joins two or more strings, and returns a copy of the joined strings
fromCharCode() Converts Unicode values to characters
indexOf() Returns the position of the first found occurrence of a specified value in a string
lastIndexOf() Returns the position of the last found occurrence of a specified value in a string
replace() Searches for a match between a substring and a string, and replaces the matched substring with a new substring
search() Searches for a match between a regular expression and a string, and returns the position of the match
slice() Extracts a part of a string and returns a new string
split() Splits a string into an array of substrings
substr() Extracts the characters from a string, beginning at a specified start position, and through the specified number of character
substring() Extracts the characters from a string, between two specified indices
toLowerCase() Converts a string to lowercase letters
toUpperCase() Converts a string to uppercase letters
trim() Removes whitespace from both ends of a string
valueOf() Returns the primitive value of a String object

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