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JavaScript 指数运算符
tryjsref_oper_exp
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<!DOCTYPE html> <html> <body> <h1>JavaScript Operators</h1> <h2>The ** (Exponentiation) Operator</h2> <p>y = 5<br>calculate x = y ** 2:</p> <p id="demo"></p> <script> let y = 5; let x = y ** 2; document.getElementById("demo").innerHTML = "Value of x is " + x; </script> </body> </html>