SOURCE

var words = [
	"ilovepapa",
	"migaisbest",
	"imissumiga",
];

var word = words[Math.floor(Math.random() * words.length)];

var answerArray = [];
for (var i = 0; i<word.length;i++){
	answerArray[i] = "_"
}

var remianingLetters = word.length;

while (remianingLetters > 0){
	alert(answerArray.join(" "));

	var guess = prompt("Guess What I wanna say to U \n 随意输入英文字符解锁 \n or click Cancel to stop playing");

	guess = guess.toLowerCase();  
  
	if(guess == null){
		break;
	}else if(guess.length !== 1){
		alert("Please enter a single letter.");
	}else{
		for (var j = 0; j<word.length;j++){
			if(word[j]==guess){
				if(answerArray[j] =="_"){
					answerArray[j] = guess;
					remianingLetters--;
				}
				
			}
		}
	}

}

alert(answerArray.join(" "));
alert("❤❀❤爱你么么哒❤❀❤ \n The answer was "+word);

<script>
  
</script>