添加按钮

Question

我目前有一个Javascript游戏，其中游戏中的每个小时都会发生其他事情。

游戏设定为从早上12点开始，我想这样做，只需点击一下按钮就可以增加一小时的时间。

我目前的情况如下

// time-related info 
var gameTime = 0;  // begin logging time, 12 a.m.
document.getElementById("clock").innerHTML = "Time: " + "12 a.m."; // start the clock at midnight 
function updateTime() {
var clock = document.getElementById("clock");
gameTime++;
if (gameTime >= 24) {
    gameTime = 0;
    clock.innerHTML = "Time: 12 a.m."
} else if (gameTime === 12) {
    clock.innerHTML = "Time: " + gameTime + " p.m.";
} else if (gameTime > 12) {
    clock.innerHTML = "Time: " + (gameTime - 12) + " p.m.";
} else {
    clock.innerHTML = "Time: " + gameTime + " a.m.";
}
}

Answer 1

＆＃13;

＆＃13;

// time-related info 
var gameTime = 0;  // begin logging time, 12 a.m.
document.getElementById("clock").innerHTML = "Time: " + "12 a.m."; // start the clock at midnight 
function updateTime() {
var clock = document.getElementById("clock");
gameTime++;
if (gameTime >= 24) {
    gameTime = 0;
    clock.innerHTML = "Time: 12 a.m."
} else if (gameTime === 12) {
    clock.innerHTML = "Time: " + gameTime + " p.m.";
} else if (gameTime > 12) {
    clock.innerHTML = "Time: " + (gameTime - 12) + " p.m.";
} else {
    clock.innerHTML = "Time: " + gameTime + " a.m.";
}
}

＆＃13;

<button onclick="updateTime()" >click here</button>
<span Id="clock"/>

＆＃13;

＆＃13;

＆＃13;

Answer 2

只需添加

var clock = document.getElementById("clock");
clock.addEventListener('click', updateTime);