Javascript has a root function. In JavaScript, you can use the sqrt() function to find the square root, the syntax is "Math.sqrt(x)"; you can also use the pow() function to find the root of a specified power, the syntax is "pow(x,1/y) ”, which means opening the y-th root of x.
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
Javascript has a root function.
In javascript, you can use the following function to open the root:
sqrt() function
pow() function
1. Use the sqrt() function to open the root number
The sqrt() method can return the square root of a number.
This function does not support negative numbers. If the parameter is less than 0, it returns NaN.
Example:
<script> console.log(Math.sqrt(1)); console.log(Math.sqrt(4)); console.log(Math.sqrt(9)); console.log(Math.sqrt(64)); console.log(Math.sqrt(-9)); </script>
1. Use the pow() function to open the root
pow(x,y)
can return x
raised to the y
power.
When the parameter y
is a fraction (greater than 0, less than 1), that is, pow(x,1/y) can open the y-th root of x.
Example:
<script> console.log(Math.pow(4,1/2)); console.log(Math.pow(81,1/4)); console.log(Math.pow(256,1/4)); </script>
[Related recommendations: javascript video tutorial, web front-end]
The above is the detailed content of Does javascript have a root function?. For more information, please follow other related articles on the PHP Chinese website!