我正在用javascript开发一个简单的三角函数程序，并且if和while语句不能正常运行，因为它们仅在第一个条件为true时才通过，即如果您输入Sine，它将起作用，但如果您输入Cosine或Tangent，则不会。
<script language="JavaScript">
var opposite = 1
var adjacent = 1
var hypotenuse = 1
var sct = "SohCahToa"
while (!(sct == ("Sine" || "Cosine" || "Tangent"))) {
sct = prompt("Sine (unknown adjacent) / Cosine (unkown opposite side) / Tangent (unknown hypotenuse)")
if (!(sct == ("Sine" || "Cosine" || "Tangent"))) {
alert("Spelling error, please try again")
}
}
if (sct == ("Sine" || "Cosine"))
hypotenuse = prompt("What is the hypotenuse")
if (sct == ("Sine" || "Tangent"))
opposite = prompt("What is …