The Number Object - Course JavaScript - Part 6 | web Developer courses

Duration:  17 minutes

Summary: In this video we discuss the Number object. JavaScript supports some object-oriented concepts. We are able to work with existing objects and create new ones. Number is an existing object that contains some constants that we can use (constants are defined as all upper case), such as MAX_VALUE, MIN_VALUE, NEGATIVE_INFINITY, POSITIVE_INFINITY. This object also contains some methods that we can use to manipulate the Number objects. In our example, we create a Number object using the keyword ‘new’. Then we executed functions against the object :  toExponential, toPrecision, toFixed, toLocaleString. One key point to remember is that toPrecision() gives us the precision of the number based on the parameter we pass to it (for example toPrecision(4) ), but that does NOT mean the decimal places. This is the precision of the whole number (such as 45.76).

Methodology of the development of example: Good coding standard and simplified design.

Technology Used: JavaScript – Core language Concepts

Keywords: JavaScript, HTML, function, var, script, document, writeln, Number, MAX_VALUE, MIN_VALUE, NEGATIVE_INFINITY, POSITIVE_INFINITY, toExponential, toPrecision, toFixed, toLocaleString.