我在Java语言中无休止的循环

Question

每当我运行此代码时，浏览器就会崩溃。 我是在犯一个愚蠢的错误，还是我的代码存在严重错误？ 我已经尝试过尽可能多地调试我的代码，但是当通过调试器进行调试时，我的代码显然没有错。 怎么了？ 非常感激你的帮助。

 function FrogFunction() { var yedec; var decidertwo; var decfrog; var ChordProgression = ["C Minor"]; var decider = Math.random(); var CurrentChord; if (decider <= 0.25) { var CurrentChord = "D Minor"; } else if (decider > 0.25 && decider <= 0.5) { var CurrentChord = "E♭ Major"; } else if (decider > 0.5 && decider <= 0.75) { var CurrentChord = "F Minor"; } else if (decider > 0.75 && decider <= 1) { var CurrentChord = "A♭ Major"; } ChordProgression.push(CurrentChord); while (CurrentChord != "B♭ Major" || CurrentChord != "G Major") { //if dminor if (CurrentChord = "D Minor") { decidertwo = Math.random(); if (decidertwo <= 0.5) { CurrentChord = "G Major"; } else { CurrentChord = "B♭ Major"; } } //if dminor //if e flat major else if (CurrentChord = "E♭ Major") { yedecider = Math.random(); if (yedecider <= 0.3) { CurrentChord = "F Minor"; } else if (yedecider <= 0.6 && yedecider > 0.3) { CurrentChord = "G Major"; } else { CurrentChord = "A♭ Major"; } } //if e flat major //if f minor else if (CurrentChord = "F Minor") { decfrog = Math.random(); if (decfrog <= 0.5) { CurrentChord = "G Major"; } else { CurrentChord = "B♭ Major"; } } //if f minor //if a flat major else if (CurrentChord = "A♭ Major") { yedec = Math.random(); if (yedec <= 0.25) { CurrentChord = "E♭ Major"; } else if (yedec <= 0.5 && yedecider > 0.25) { CurrentChord = "F Minor"; } else if (yedec <= 0.75 && yedecider > 0.5) { CurrentChord = "G Major"; } else { CurrentChord = "B♭ Major" } } //if a flat major ChordProgression.push(CurrentChord); //past this bracket is the end bracket of the while loop } document.getElementById("PlaceForChords").innerHTML = ChordProgression; } 

 <center> <p></p> <p><button onclick="FrogFunction()">Generate Chords</button></p> <p id="PlaceForChords"></p> </center> 

Answer 1

此语句永远不会为false ：

while(CurrentChord!="B♭ Major" || CurrentChord!="G Major"){

CurrentChord永远不能同时是"B♭ Major" 和 "G Major" 。 永远不是那两个的其中之一。

要解决此问题，请替换|| 与&& ：

“虽然和弦不是“ B♭大调” 而和弦不是“ G大调” => “ do something” 。

另外， 最好使用!==代替!= ；

因此，已修复：

while(CurrentChord !== "B♭ Major" && CurrentChord !== "G Major"){

要么：

while(!(CurrentChord === "B♭ Major" || CurrentChord === "G Major")){

从逻辑上讲，它们将返回相同的值。 您使用的只是个人喜好。