In JavaScript, you can use the sqrt() method to achieve the effect of finding the square root. This method is used to return the square root of a number. The parameter value in the method must be a number, and when the parameter in the method is less than zero When , the returned result is "NaN", and the syntax is "Math.sqrt (the value requiring the square root)".
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
You can use the sqrt() method to find the square root.
The sqrt() method returns the square root of a number.
The syntax is:
Math.sqrt(x)
Parameter x is required. Must be a number greater than or equal to 0.
The returned result is: the square root of parameter x. If x is less than 0, returns NaN.
The example is as follows:
123 单击按钮显示不同数值的平方根。
Output result:
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