Referensi String JavaScript
String JavaScript
String JavaScript menyimpan serangkaian karakter seperti "John Doe".
String dapat berupa teks apa pun di dalam tanda kutip ganda atau tunggal:
let carName1 = "Volvo XC60";
let carName2 = 'Volvo XC60';
Indeks string berbasis nol:
Karakter pertama di posisi 0, yang kedua di 1, dan seterusnya.
Untuk tutorial tentang String, baca Tutorial String JavaScript kami .
Properti dan Metode String
Biasanya, string seperti "John Doe", tidak dapat memiliki metode atau properti karena bukan objek.
Tetapi dengan JavaScript, metode dan properti juga tersedia untuk string, karena JavaScript memperlakukan string sebagai objek saat mengeksekusi metode dan properti.
Metode String JavaScript
| Method | Description |
|---|---|
| charAt() | Returns the character at a specified index (position) |
| charCodeAt() | Returns the Unicode of the character at a specified index |
| concat() | Returns two or more joined strings |
| endsWith() | Returns if a string ends with a specified value |
| fromCharCode() | Returns Unicode values as characters |
| includes() | Returns if a string contains a specified value |
| indexOf() | Returns the index (position) of the first occurrence of a value in a string |
| lastIndexOf() | Returns the index (position) of the last occurrence of a value in a string |
| localeCompare() | Compares two strings in the current locale |
| match() | Searches a string for a value, or a regular expression, and returns the matches |
| repeat() | Returns a new string with a number of copies of a string |
| replace() | Searches a string for a value, or a regular expression, and returns a string where the values are replaced |
| search() | Searches a string for a value, or regular expression, and returns the index (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 |
| startsWith() | Checks whether a string begins with specified characters |
| substr() | Extracts a number of characters from a string, from a start index (position) |
| substring() | Extracts characters from a string, between two specified indices (positions) |
| toLocaleLowerCase() | Returns a string converted to lowercase letters, using the host's locale |
| toLocaleUpperCase() | Returns a string converted to uppercase letters, using the host's locale |
| toLowerCase() | Returns a string converted to lowercase letters |
| toString() | Returns a string or a string object as a string |
| toUpperCase() | Returns a string converted to uppercase letters |
| trim() | Returns a string with removed whitespaces |
| valueOf() | Returns the primitive value of a string or a string object |
Catatan
Semua metode string mengembalikan nilai baru.
Mereka tidak mengubah variabel asli.
Properti String JavaScript
| Property | Description |
|---|---|
| constructor | Returns the string's constructor function |
| length | Returns the length of a string |
| prototype | Allows you to add properties and methods to an object |
Metode Pembungkus HTML String
Metode pembungkus HTML mengembalikan string yang dibungkus di dalam tag HTML.
Ini bukan metode standar, dan mungkin tidak berfungsi seperti yang diharapkan.
| Method | Description |
|---|---|
| anchor() | Displays a string as an anchor |
| big() | Displays a string using a big font |
| blink() | Displays a blinking string |
| bold() | Displays a string in bold |
| fixed() | Displays a string using a fixed-pitch font |
| fontcolor() | Displays a string using a specified color |
| fontsize() | Displays a string using a specified size |
| italics() | Displays a string in italic |
| link() | Displays a string as a hyperlink |
| small() | Displays a string using a small font |
| strike() | Displays a string with a strikethrough |
| sub() | Displays a string as subscript text |
| sup() | Displays a string as superscript text |