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<!DOCTYPE html> <html> <body> <h2>JavaScript 数字</h2> <p>如果您计算的数超出最大可能数，则返回无穷大：</p> <p id="demo"></p> <script> var myNumber = 2; var txt = ""; while (myNumber != Infinity) { myNumber = myNumber * myNumber; txt = txt + myNumber + "<br>"; } document.getElementById("demo").innerHTML = txt; </script> </body> </html>