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JavaScript String substr() Method with Example
JavaScript String substr() Method: Here, we are going to learn about the substr() method in JavaScript with Example.
Submitted by IncludeHelp, on February 06, 2019
String substr() Method
substr() method is a string method in JavaScript, it is used to extract a part of the string (substring) from the given string.
Syntax
String.substr(start, [length]);
Parameters
- String is the main string.
- start is the initial index from where we have to extract the part of the string.
- length is an optional parameter, it defines the total number of characters to be extracted from the given index.
Sample Input/Output
str = "IncludeHelp is made for students.";
start = 10
length = None
Output:
"p is made for students."
Input:
str = "IncludeHelp is made for students.";
start = 0
length = 11
Output:
"IncludeHelp"
Example
<html>
<head>
<title>JavaScipt Example</title>
</head>
<body>
<script>
var str = "IncludeHelp is made for students.";
var substring ="";
substring = str.substr(10);
document.write(substring + "<br>");
substring = str.substr(0,11);
document.write(substring + "<br>");
substring = str.substr(12,7);
document.write(substring + "<br>");
</script>
</body>
</html>
Output
p is made for students.
IncludeHelp
is made
JavaScript String Object Methods »
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