How To Use String Object Substr In JavaScript
In this article I am going to explain about String Object Substr In JavaScript.
Use substr() method in JavaScript
The substr() method is used to read the all character set and select the position of specified character set, and return a specified number of character.
This method extract characters from the end of the string.
This method use a negative start number.
The substr() method does not change the original string in JavaScript.
All browsers support string object substr method, (This does not work in IE8).
Syntax
|
string.substr(start,length)
|
Example
|
<!DOCTYPE html>
<html>
<body style ="background-color :Red">
<p id="demo">Extract parts of the string.</p>
<button onclick="myFunction()">Click here</button>
<script type="text/javascript">
function myFunction() {
var str = "Welcome India!";
var n = str.substr(3, 5);
document.getElementById("demo").innerHTML = n;
}
</script>
</body>
</html>
|
Output1
Output2
Further Readings
You may also want to read these related articles :here
Ask Your Question
Got a programming related question? You may want to post your question here
Programming Answers here