ES6-문자열

String 객체를 사용하면 일련의 문자로 작업 할 수 있습니다. JavaScript의 문자열 프리미티브 데이터 유형을 여러 도우미 메서드로 래핑합니다.

JavaScript는 문자열 프리미티브와 String 객체 사이를 자동으로 변환하므로 문자열 프리미티브에서 String 객체의 도우미 메서드를 호출 할 수 있습니다.

다음 구문을 사용하여 String 개체를 만듭니다.

var val = new String(string);

문자열 매개 변수는 올바르게 인코딩 된 일련의 문자입니다. 끈.

문자열 속성

다음은 String 개체의 속성 및 설명 목록입니다.

Sr. 아니요	속성 및 설명
1	constructor Returns a reference to the String function that created the object .
2	length Returns the length of the string.
3	Prototype The prototype property allows you to add properties and methods to an object .

String Methods

Here is a list of the methods available in String object along with their description.

Sr.No	Method & Description
1	charAt() Returns the character at the specified index.
2	charCodeAt() Returns a number indicating the Unicode value of the character at the given index.
3	concat() Combines the text of two strings and returns a new string.
4	indexOf() Returns the index within the calling String object of the first occurrence of the specified value, or -1 if not found.
5	lastIndexOf() Returns the index within the calling String object of the last occurrence of the specified value, or -1 if not found.
6	localeCompare() Returns a number indicating whether a reference string comes before or after or is the same as the given string in a sorted order.
7	match() Used to match a regular expression against a string.
8	replace() Used to find a match between a regular expression and a string, and to replace the matched substring with a new substring.
9	search() Executes the search for a match between a regular expression and a specified string.
10	slice() Extracts a section of a string and returns a new string.
11	split() Splits a String object into an array of strings by separating the string into substrings.
12	substr() Returns the characters in a string beginning at the specified location through the specified number of characters.
13	substring() Returns the characters in a string between two indexes into the string.
14	toLocaleLowerCase() The characters within a string are converted to lower case while respecting the current locale.
15	toLocaleupperCase() The characters within a string are converted to uppercase while respecting the current locale.
16	toLowerCase() Returns the calling string value converted to lowercase.
17	toString() Returns a string representing the specified object.
18	toUpperCase() Returns the calling string value converted to uppercase.
19	valueOf() Returns the primitive value of the specified object.