#4 JavaScript String Methods
HTML-код
- Опубликовано: 13 июл 2024
- 00:00 Introduction
03:17 Regex
06:08 length
07:37 charAt()
10:06 indexOf()
12:58 slice()
15:33 substring()
16:39 concat()
18:22 includes()
20:49 match()
24:00 search()
25:26 split()
27:42 toUpperCase()
28:45 toLowerCase()
29:19 trim()
30:44 trimStart()
33:18 trimEnd()
34:45 padStart
38:05 padEnd
39:05 startsWith
43:14 endsWith
44:10 replace
1. length:
Returns the number of characters in a string.
2. charAt(index):
Returns the character at the specified index in a string.
3. indexOf(substring):
Returns the index of the first occurrence of a substring in a string. Returns -1 if the substring is not found.
4. slice(startIndex, endIndex):
Returns a portion of a string between the specified startIndex and endIndex.
5. substring(startIndex, endIndex):
Returns a substring between the specified startIndex and endIndex in a string.
6. concat(str1, str2, ...):
Concatenates two or more strings and returns a new string.
7. includes(searchString):
Checks if a string contains the specified searchString and returns a boolean.
8. match(regexp):
Searches a string for a match against a regular expression and returns an array of matches.
9. search(regexp):
Searches a string for a match against a regular expression and returns the index of the first match.
10. split(separator):
Splits a string into an array of substrings based on the specified separator.
11. toUpperCase():
Converts all characters in a string to uppercase.
12. toLowerCase():
Converts all characters in a string to lowercase.
13. trim():
Removes whitespaces from both ends of a string.
14. trimStart():
Removes whitespaces from the beginning of a string.
15. trimEnd():
Removes whitespaces from the end of a string.
16. padStart(targetLength, padString):
Pads the start of a string with a specified padString until the resulting string reaches the targetLength.
17. padEnd(targetLength, padString):
Pads the end of a string with a specified padString until the resulting string reaches the targetLength.
18. startsWith(prefix):
Checks if a string starts with a specified prefix and returns a boolean.
19. endsWith(suffix):
Checks if a string ends with a specified suffix and returns a boolean.
20. replace(search, replacement):
Replaces the first occurrence of a specified value (search) with another value (replacement) in a string. Наука
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