| S.No. | Method & Description | 
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| 1. | charAt() It returns the character at the specified index.
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| 2. | charCodeAt() It returns a number showing the Unicode value of the character at the given index.
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| 3. | concat() It combines the text of two strings and gives a new string.
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| 4. | indexOf() It returns the index within the calling String object of the first occurrence of the specified value, or -1 if not found.
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| 5. | lastIndexOf() It returns the index within the calling String object of the last occurrence of the specified value, or -1 if not found.
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| 6. | localeCompare() It returns a number showing whether a reference string comes before or after or is the same as the given string in sort order.
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| 7. | match() It matches a regular expression against a string.
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| 8. | replace() It finds a match between a regular expression and a string and replaces the matched substring with a new substring.
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| 9. | search() It runs the search for a match between a regular expression and a specified string.
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| 10. | slice() It removes a section of a string and returns a new string.
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| 11. | split() It splits a String object into an array of strings by separating the string into substrings.
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| 12. | substr() It returns the characters in a string beginning at the specified location through the specified number of characters.
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| 13. | substring() It returns the characters in a string between two indexes into the string.
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| 14. | toLocaleLowerCase() The characters within a string are changed to lower case while respecting the current locale.
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| 15. | toLocaleUpperCase() The characters within a string are changed to an upper case while respecting the current locale.
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| 16. | toLowerCase() It returns the calling string value changes to lower case.
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| 17. | toString() It returns a string showing the specified object.
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| 18. | toUpperCase() It returns the calling string value changes to uppercase.
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| 19. | valueOf() It returns the first value of the specified object.
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