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Notes et mémos techniques

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

javascript
tutoriel
rédigé le 06/10/16 par Behrouze
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