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我想获得一个函数来重复一个单独的eventListener的代码。事件监听器仅执行一次该过程。 while循环意图完成进程'num'次。当eventListener按钮工作时，并且将正确分配“dice-”+ dice +“.png”并显示适当的图形文件，while循环不会。它会生成一个随机的.png文件，并显示这个num时间，即使每次迭代都会产生一个新的随机数。为了避免混淆，我已经为每个案例分别命名了变量。DOM - 分配随机数来操作
document.querySelector(".btn-roll").addEventListener("click", function() {
//1. Rnd number
dice = Math.floor(Math.random() * 6) + 1;
//2. Display the result
var diceDOM = document.querySelector(".dice");
diceDOM.style.display = "block";
diceDOM.src = "dice-" + dice + ".png";
console.log(diceDOM);
});
//roll dice num times
function rollDice(num) {
var i = 1;
var dice2 = 0;
while (i < num) {
//1. Rnd number
dice2 = Math.floor(Math.random() * 6) + 1;
console.log("Dice: " + dice2); //error checking. dice2 is producing new number each loop iteration
//update diceDOM with new dice value
var diceDOM2 = document.querySelector(".dice");
diceDOM2.style.display = "block";
diceDOM2.src = "dice-" + dice2 + ".png";
console.log(diceDOM2); //error checking. diceDOM appears to be set on calling loop fist time (not set by dice var, but an alternative random number)
i++;
};
};