Description:
This method returns the characters in a string beginning at the specified location through the specified number of characters.
Syntax:
string.substr(start[, length]); |
Here is the detail of parameters:
- start : Location at which to begin extracting characters (an integer between 0 and one less than the length of the string).
- length : The number of characters to extract.
Note: If start is negative, substr uses it as a character index from the end of the string.
Return Value:
- The substr method returns the new sub string based on given parameters.
Example:
<html> <head> <title>JavaScript String substr() Method</title> </head> <body> <script type="text/javascript"> var str = "Apples are round, and apples are juicy."; document.write("(1,2): " + str.substr(1,2)); document.write("<br />(-2,2): " + str.substr(-2,2)); document.write("<br />(1): " + str.substr(1)); document.write("<br />(-20, 2): " + str.substr(-20,2)); document.write("<br />(20, 2): " + str.substr(20,2)); </script> </body> </html> |
This will produce following result:
(1,2): pp (-2,2): Ap (1): pples are round, and apples are juicy. (-20, 2): Ap (20, 2): d |
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