JavaScript Basic Series (c) data type (numeric number)

Source: Internet
Author: User

In JavaScript, you want to limit the value of a number without qualifying it as an integer or floating-point type

    var num1 = n;     var num2 = 55.51;     var num3 = -34;     var num4 = 9e5;     + "+ num2 +" "+ num3 +" "+ num4); //

The toexponential () function is displayed in a way that converts a numeric value to science and technology, for example:

  document.write (num2.toexponential (9)); // Output 5.551000000e+1

Object properties and Object methods for W3cschool values

Number object property
Properties Description
Constructor Returns a reference to the number function that created this object.
Max_value The maximum number that can be represented.
Min_value The smallest number that can be represented.
NaN Non-numeric value.
Negative_infinity Negative infinity, which returns this value when overflow.
Positive_infinity Positive infinity, which returns this value when overflow.
Prototype gives you the ability to add properties and methods to an object.
Number Object method
Method Description
Tostring Converts a number to a string, using the specified cardinality.
toLocaleString Converts a number to a string, using the local number format order.
ToFixed Converts a number to a string, the result of which has a specified number of digits after the decimal point.
Toexponential Converts the value of an object to an exponential count method.
Toprecision Formats the number as the specified length.
ValueOf Returns the base numeric value of a number object.

JavaScript Basic Series (c) data type (numeric number)

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