JavaScript String substring() Method

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JavaScript String substring() Method

The substring() method returns the part of the string between the start and end indexes, or to the end of the string (if not specified).

substring() with start Index

Example

HTML Online Editor
<!DOCTYPE html> <html> <body> <script> var str = "Hello there my old friend"; var result = str.substring(5); document.write(result); </script> </body> </html>

Syntax

str.substring(start, end)

Parameter Values

ValueTypeExplanation
startRequiredA index specifies the starting point of the extraction.
endoptionalA index specifies the ending point of the extraction.
If omitted, by default it extracts the rest of the string.

Return Values

ValueExplanation
StringReturns a new string containing the specified part of the given string.
EmptyReturns empty string, if start = end.

substring() with start and end Indexes

Example

HTML Online Editor
<!DOCTYPE html> <html> <body> <script> var str = "Hello there my old friend"; var result = str.substring(5, 18); document.write(result); </script> </body> </html>

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