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The methods of the math object are: 1. round(), used for rounding; 2. ceil(), which can be rounded up; 3. floor(), which can be rounded down; 4. pow() , can return the y power of x; 5. sqrt(), can return the square root of a number; 6. max(); 7. min(); 8. random(); 9. abx(); 10. sin( ); 11. asin(); 12. cos(); 13. acos(); 14. tan(); 15. exp().
The operating environment of this tutorial: windows7 system, jquery3.6 version, Dell G3 computer.
jquery Math object method
Rounding Math.round()
Math.round() //四舍五入,去最接近的整数 Math.round(2.2) //--2 Math.round(2.5) //--3
Round up Math.ceil()
Math.ceil() //上取整 Math.ceil(2.2) //--3 Math.ceil(2.5) //--3
Round down Math.floor()
Math.floor() //下取整 Math.floor(2.2) //--2 Math.floor(2.5) //--2
Returns the y power of xMath.pow(x,y)
Math.pow(x,y) //返回x的y次幂 Math.pow(2,2) //--4 Math.round(2,3) //--8
Returns the square root of xMath.sqrt()
Math.sqrt(x) Math.sqrt(4) //2 Math.sqrt(9) //3 Math.sqrt(6) //2.449489742783178
Return the highest value in x,y,z,…,n Math.max(x,y,z,…n)
Math.max(x,y,z,.....n) //返回 x,y,z,...,n 中的最高值 //Math.max(2,3,4,6,5)--6
Return the minimum value in x,y,z,…,n Math.min(x,y,z,…n)
Math.min(x,y,z,.....n) //返回 x,y,z,...,n中的最小值 //Math.max(2,3,4,6,5)--2
Returns a random number between 0 ~ 1 Math.random()
Math.random() //返回 0 ~ 1 之间的随机数 //返回0-100之间的随机数 x=100 y=0 //parseInt(Math.random()*(x - y + 1) + y)
Returns the absolute value of xMath.abx( x)
Math.abx(x) //返回 x 的绝对值 Math.abx(2) //--2 Math.abx(-2) //--2
Returns the sine of xMath.sin(x)
Math.sin(x) //返回 x 的正弦值 Math.sin(1) //0.8414709848078965
Returns the arcsine of xMath.asin(x)
Math.asin(x) //返回 x 的反正弦值 Math.asin(-2); // NaN Math.asin(-1); // -1.5707963267948966 (-pi/2) Math.asin(0); // 0 Math.asin(0.5); // 0.5235987755982989 Math.asin(1); // 1.570796326794897 (pi/2) Math.asin(2); // NaN //对于小于 -1 或大于 1 的参数值,Math.asin 返回 NaN。
Returns the cosine of x Math.cos(x)
Math.cos(x) Math.cos(1) //0.5403023058681398 Math.cos(-1) //0.5403023058681398
Returns the inverse cosine of x Math.acos(x)
Math.acos(-1) //3.141592653589793 Math.acos(-2) //NaN Math.acos(0) //1.5707963267948966 Math.acos(1) //0 //对于小于 -1 或大于 1 的参数值,Math.acos 返回 NaN。
Returns the tangent of the angle Math.tan()
Math.tan() Math.tan(15) //-0.8559934009085188
Returns E The exponent of the power of
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