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]);
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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>
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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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