All js strings method – less text , more snippet

1. String.length :

Returns the length of the string.

2. indexOf( ) :

Returns the starting index no of searching character or word.
It searches forward.
It takes 2 argument, 2nd argument is for search starting index number an…


This content originally appeared on DEV Community and was authored by Sahil Saif

1. String.length :

  • Returns the length of the string. length

2. indexOf( ) :

  • Returns the starting index no of searching character or word.
  • It searches forward.
  • It takes 2 argument, 2nd argument is for search starting index number and 2nd argument is not compulsory.
  • If searching string does not found then it will return -1 indexof

3. lastIndexOf( ) :

  • same as indexOf() just difference it starts searching from last or backward last index of

4. search( ) :

  • same as previous two just difference is search() and does not take 2nd argument and always search forward. search

5. includes( ) :

  • Returns true or false as the given string is present or not on the main string. includes

6. startsWith( ) :

  • Returns true or false as the main string starts with the given text or not. startsWith

7. endsWith( ) :

  • Returns true or false as the main string ends with the given text or not. endswith

8. replace( ) :

  • Takes two argument - (present string, replaced string).
  • It replaces only the first matched. replace

9. replaceAll( ) :

  • will replace all matching string on main string.
  • VS code does not give suggestion for replaceAll() but you just type , it will work. replaceAll

10. toUpperCase( ) :

  • Converts whole string to uppercase. uppercase

11. toLowerCase( ) :

  • Converts whole string to lowercase. lowercase

12. trim( ) :

  • Removes whitespaces from start and end of the string. trim

13. concat( ) :

  • Join two different strings. concat

14. repeat( ) :

  • Repeats a string from 1 to infinity times. Just need to mention repeat number inside ( ) repeat

15. charAt( ) :

  • Accessing string characters with index num. charAt

16. charCodeAt( ) :

  • Accessing string character's UTF-16 code with character's index number. charcodeat

17. slice( ) :

  • Extracting string from a string.
  • takes two argument - (starting index, ending index) . ending index is not compulsory.
  • ending index= -1 means till end. slice

18. substring( ) :

  • substring() is similar to slice() the difference is substring does not except negative indexes.
  • If we give negative value then the character are counted from the 0th position. substring

19. substr( ) :

  • 2 argument- (starting index, length of new string). 2nd argument can't be negative. substr

20. match( ) :

  • The match() method searches a string for a match against a regular expression, and returns the matches, as an Array object. match

21. padStart( ) :

  • Add white spaces at the start of the string. Inside ( ) you need to give your total string length with starting whitespaces.
  • whitespaces = length - string characters length padstart

22. padEnd( ) :

  • same as padStart( ) just here whitespaces will add at last.
  • To recognize spaces , bellow in pic in comment at last added '|' padend

23. split( ) :

  • Break string and convert it in array. split

24. codePointAt( ) :

  • Return unicode value of given character. codepointat

25. fromCharCode( ) :

  • Return character from unicode value.
  • in bellow pic comment ans is // TSb fromcharcode

26. localeCompare( ) :

  • Two string comparison. The reference or base string always written at first then .localeCompare(string2)
  • Returns negative number (-1) if the reference string is sorted before string2.
  • Returns 0 if two strings are equivalent.
  • Returns positive number (1) if the reference string is sorted after string2. localeCompare

so here we are ! Feel free bookmark this blog for Quick revise on any time.
I tried best to mention all method even some similar to each other. But if i missed any method please tell me comment.

And connect with me on twitter for other JavaScript and CSS stuff.


This content originally appeared on DEV Community and was authored by Sahil Saif


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