JavaScript number object.pptx
- 1. What is your favorite number? Is math your favorite subject?
- 3. JavaScript number object ROBERT S. PUGAYAN JR. The JavaScript number object enables you to represent a numeric value. It may be integer or floating-point. JavaScript number object follows IEEE standard to represent the floating-point numbers. • By the help of Number() constructor, you can create number object in JavaScript. For example: 1. var n=new Number(value); • If value can't be converted to number, it returns NaN(Not a Number) that can be checked by isNaN() method.
- 4. JavaScript number object ROBERT S. PUGAYAN JR. You can direct assign a number to a variable also. For example: <script> var x=102;//integer value var y=102.7;//floating point value var z=13e4;//exponent value, output: 130000 var n=new Number(16);//integer value by number object document.write(x+" "+y+" "+z+" "+n); </script>
- 5. JavaScript Number Constants Constant Description MIN_VALUE returns the largest minimum value. MAX_VALUE returns the largest maximum value. POSITIVE_INFINITY returns positive infinity, overflow value. NEGATIVE_INFINITY returns negative infinity, overflow value. NaN represents "Not a Number" value.
- 6. JavaScript Number Methods Methods Description isFinite() It determines whether the given value value is a finite number. isInteger() It determines whether the given value value is an integer. parseFloat() It converts the given string into a floating-point number. parseInt() It converts the given string into an integer number. toExponential() It returns the string that represents exponential notation of the given number. toFixed() It returns the string that represents a number with exact digits after a decimal point. toPrecision() It returns the string representing a number of specified precisions. toString() It returns the given number in the form of string.
- 7. What have you learned?
- 8. 01:Identify what is being describe. Constant Description returns the largest minimum value. returns the largest maximum value. returns positive infinity, overflow value. returns negative infinity, overflow value. represents "Not a Number" value.
- 9. 01:Identify what is being describe. Methods Description It determines whether the given value is a finite number. It determines whether the given value is an integer. It converts the given string into a floating-point number. It converts the given string into an integer number. It returns the string that represents exponential notation of the given number. It returns the string that represents a number with exact digits after after a decimal point. It returns the string representing a number of specified precisions. It returns the given number in the form of string.