I can't figure out this programming problem

var questionsLeft= 5;
var questionsCorrect;

var question1= prompt("What language is named after a gem?");
questionsLeft-=1;

if(question1=== "ruby".toUpperCase()) {questionsCorrect+=1; alert("correct! [You have " + questionsLeft + " left]");}
else {alert("sorry, the correct answer was ruby. [You have " + questionsLeft + " left]");}

When a question is answered in the prompt it always comes back as wrong and the program stops running immediately after the question4 prompt. Any ideas as to why this is?


var question2= prompt("What language is named after a snake?");
questionsLeft-=1;

if(question2==="python".toUpperCase()) { questionsCorrect+=1; alert("correct!, [you have " + questionsLeft + " left]");}
else{alert("sorry, the answer was python [You have " + questionsLeft + " left]");}

var question3= prompt("What language is this program written in?");
questionsLeft-=1;

if(question3=== "javascript".toUpperCase()) {alert("correct! [You have " +  questionsLeft + " left");
questionsCorrect+=1; alert("correct! [you have " + questionsLeft + " left]");}
else{alert("sorry, the answer was javascript [You have " + questionsLeft + " left]");}

var question4= prompt("What language styles a webpage?");
questionsLeft-=1;

if(question4=== "css".toUpperCase()){ questionsCorrect+=1; alert("correct!, [you have " + questionsLeft + " left]");}
else{alert("sorry, the correct answer was css [you have " + questoinsLeft + " left]");}

var question5= prompt("What language structures a webpage?");
questionsLeft-=1;

if(question5=== "html".toUpperCase()){questionsCorrect+=1; alert("correct! [You have " + questionsLeft + " left]");}
else{alert("sorry, the correct answer html [You have " + questionsLeft + " left]");}

if(questionsCorrect=== 5){alert("you recieved a gold crown");}
if(questionsCorrect > 4) {alert("You recieved a silver crown");}
if(questionsCorrct > 2) {alert("You recieved a bronze crown");}
else{alert("sorry, You recieved no crown");}