Catégories
JavaScript

les fonctions string en javascript

Voici un classement par type de retours des fonctions applicables aux chaines de caractères

Tableau de strings

match(): regex Searches a string for a match against a regular expression, and returns the matches
split(): Splits a string into an array of substrings

Booléens

endsWith(): Checks whether a string ends with specified string/characters
includes(): Checks whether a string contains the specified string/characters
localeCompare(): Compares two strings in the current locale
startsWith(): Checks whether a string begins with specified characters

Caractères

substring(): Extracts the characters from a string, between two specified indices
substr(): Extracts the characters from a string, beginning at a specified start position, and through the specified number of character
fromCharCode(): Converts Unicode values to characters

Position

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
search(): Searches a string for a specified value, or regular expression, and returns the position of the match
charCodeAt(): Returns the Unicode of the character at the specified index
charAt(): Returns the character at the specified index (position)

Manipulation de chaines de caractère

concat(): Joins two or more strings, and returns a new joined strings
repeat(): Returns a new string with a specified number of copies of an existing string
replace(): Searches a string for a specified value, or a regular expression, and returns a new string where the specified values are replaced
slice(): Extracts a part of a string and returns a new string
toLocaleLowerCase(): Converts a string to lowercase letters, according to the host’s locale
toLocaleUpperCase(): Converts a string to uppercase letters, according to the host’s locale
toLowerCase(): Converts a string to lowercase letters
toString(): Returns the value of a String object
toUpperCase(): Converts a string to uppercase letters
trim(): Removes whitespace from both ends of a string

Casting

valueOf(): Returns the primitive value of a String object

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