Collection of mathematical functions in Javascript_Basic knowledge

In Javascript, mathematical methods can be divided into the following categories:
consstans (constants), power functions (power functions), trigonometic functions (trigonometric functions), rounding functions (rounding functions), random numbers (random numbers)


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Constant and power functions

Math.E The base of the natural logarithm (is a constant) 2.718
Math.LN10 The natural logarithm of 10 2.302
Math.LN2 Natural logarithm of 2 0.693
Math.PI Pi 3.1415
Math.SQRT1_2 Square root of 1/2 0.707
Math.SQRT2 Square root of 2 1.414
Math.sqrt(x) X The square root of is related to the value of X.
Math.pow(x, n) Returns the n value of 🎜>Math.exp(n) Returns the value of e raised to the nth power. The parameter is n.

Trigonometric function

Math.cos(x) The cosine function of X.
Math.sin( x) sine function of X
Math.tan(x) tangent function of X
Math.acos(y) inverse cosine function of Math.atan(y) Arctangent function of Functions and Random Numbers

Math.random() Generate random numbers from 0 to 1
Math.round(x) Get the closest value to the integer x
Math.floor(x) Get the closest A value close to an integer x and smaller than x
Math.ceil(x) Gets the value closest to an integer x and larger than x 🎜>Math.max(a, b, c) Returns the largest value in the parameter list


Original text: http://www.cnlei.org/blog/article.asp?id=408