代碼崩潰的Firefox

Question

這個腳本的Firefox崩潰，並以代碼blueSelectorBar[mobIndex].style.border = "3px solid white"

下面是腳本

 var blueSelectorBar = document.getElementById('blueSelector').getElementsByTagName('div'); 
     for (var bar = 0; bar < blueSelectorBar.length; bar++){ 
      var blueCurrentBox = blueSelectorBar[bar]; 
      console.log(blueCurrentBox.dataset.mob) 
      var blueMobId = blueCurrentBox.dataset.mob 
      if (eval(blueMobId) == toReturn){ 
       var mobIndex = bar 
       for (var bar2 = 0; bar2 < blueSelectorBar.length; bar++){ 
        blueSelectorBar[bar2].style.border = "3px solid black" 
       }; 
      }; 
     }; 
     blueSelectorBar[mobIndex].style.border = "3px solid white" 
     return toReturn 

的部分爲什麼崩潰行帶來了無響應腳本消息？

Answer 1

在內環：

  for (var bar2 = 0; bar2 < blueSelectorBar.length; bar++){ 
       blueSelectorBar[bar2].style.border = "3px solid black" 
      }; 

你遞增bar代替bar2。因此，該循環將永遠不會完成，因爲bar2永不改變。