Page 348 - Webapplication11_C11_Flipbook
P. 348
Ð ÐvalueOf( ): It returns a string’s primitive value. The original string is not changed by the method.
For example:
<!DOCTYPE html>
<HTML>
<HEAD>
<TITLE> ValueOf function </TITLE>
</HEAD>
<BODY>
<H1> Using valueOf </H1>
<SCRIPT>
text = "I am studying JavaScript";
result = text.valueOf();
document.write(result);
</SCRIPT>
</SCRIPT>
</BODY>
</HTML>
Output of the above code is as follows:
4.17 MATH OBJECT
The JavaScript Math object offers a wide range of methods that are used to simplify mathematical calculations and
speed up math-oriented programming. Here are a few:
Math.round(x) Number x is rounded to its nearest integer
Math.ceil(x) Number x is rounded up to its nearest integer
Math.floor(x) Number x is rounded down to its nearest integer
Math.trunc(x) Yields the integer part of the Number x
Example:
<HTML>
<BODY>
<SCRIPT>
document.write(Math.round(7.4))
document.write("<br>"+Math.round(7.6))
document.write("<br>"+Math.ceil(3.9))
document.write("<br>"+Math.ceil(3.2))
document.write("<br>"+Math.ceil(-3.2))
346 Touchpad Web Applications-XI

