此方法傳回底數的指數冪,即, baseexponent.
文法
Math.pow(base, exponent ) ;
以下是參數的詳細資訊:
傳回值:
傳回到底數的指數冪,即,底數指數.
範例:
<html> <head> <title>JavaScript Math pow() Method</title> </head> <body> <script type="text/javascript"> var value = Math.pow(7, 2); document.write("First Test Value : " + value ); var value = Math.pow(8, 8); document.write("<br />Second Test Value : " + value ); var value = Math.pow(-1, 2); document.write("<br />Third Test Value : " + value ); var value = Math.pow(0, 10); document.write("<br />Fourth Test Value : " + value ); </script> </body> </html>
這將產生以下結果:
First Test Value : 49 Second Test Value : 16777216 Third Test Value : 1 Fourth Test Value : 0