因此,本书中的练习如下: 尝试将其变成一个“抓住兔子”的游戏,兔子随时随地移动它。 4次尝试将鼠标悬停后,应显示“无复活节彩蛋”消息。经过20次尝试后,应显示“人类吸食”。创建带有固定宽度和高度的单个div元素的页面,并在其周围有一个边框,其中包含一个正下方包含idso的p元素,您可以将其用作输出。使用div上的onmousemove事件来计算事件触发的次数,并在p元素中显示计数。 首先我有一个迷你型的锻炼我尝试下面的代码:javascript试图找到兔子代码
<body>
<div>
<h1>Catch the Easter Bunny to get your egg!</h1>
<img src="rabbit.png" id="rabbit" onmouseover="MyFunction1()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="rabbit2" onmouseover="MyFunction2()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="rabbit3" onmouseover="MyFunction3()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="rabbit4" onmouseover="MyFunction4()" alt="Catch the rabbit"/>
<h2 id="noeggs">No Easter Eggs for You</h2>
<h2 id="yousuck">Humans suck!!!</h2>
</div>
<script>
function MyFunction1(){
document.getElementById('rabbit').style.visibility = 'hidden';
document.getElementById('rabbit2').style.visibility = 'visible';
document.getElementById('rabbit3').style.visibility = 'visible';
document.getElementById('rabbit4').style.visibility = 'visible';
}
function MyFunction2(){
document.getElementById('rabbit').style.visibility = 'visible';
document.getElementById('rabbit2').style.visibility = 'hidden';
document.getElementById('rabbit3').style.visibility = 'visible';
document.getElementById('rabbit4').style.visibility = 'visible';
}
function MyFunction3(){
document.getElementById('rabbit').style.visibility = 'visible';
document.getElementById('rabbit2').style.visibility = 'visible';
document.getElementById('rabbit3').style.visibility = 'hidden';
document.getElementById('rabbit4').style.visibility = 'visible';
}
function MyFunction4(){
document.getElementById('rabbit').style.visibility = 'visible';
document.getElementById('rabbit2').style.visibility = 'visible';
document.getElementById('rabbit3').style.visibility = 'visible';
document.getElementById('rabbit4').style.visibility = 'hidden';
}
</script>
</body>
这工作得很好,但实际行使希望它变成1周功能的MyFunction不Myfunction1,MyFunction的2等..和ofcourse 20张不同的兔子图片而这一切,如果你4次尝试中得到它,你获得了“人类吮吸出现”,或者如果它的20倍以上,你得到“没有复活节彩蛋你”所以后来我尝试了以下内容:
This is the html:
<body>
<div>
<p></p>
<h1>Catch the Easter Bunny to get your egg!</h1>
<img src="rabbit.png" id="r1" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r2" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r3" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r4" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r5" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r6" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r7" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r8" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r9" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r10" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r11" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r12" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r13" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r14" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r15" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r16" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r17" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r18" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r19" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<img src="rabbit.png" id="r20" onmouseover="MyFunction()" alt="Catch the rabbit"/>
<h2 id="noeggs">No Easter Eggs for You</h2>
<h2 id="yousuck">Humans suck!!!</h2>
</div>
<script>
function MyFunction(){
document.getElementByTagNames('img').addEventListener('mouseover', onmouse);
document.getElementById('r1').style.visibility = "hidden";
document.getElementById('r2').style.visibility = "hidden";
document.getElementById('r3').style.visibility = "hidden";
document.getElementById('r4').style.visibility = "hidden";
document.getElementById('r5').style.visibility = "hidden";
document.getElementById('r6').style.visibility = "hidden";
document.getElementById('r7').style.visibility = "hidden";
document.getElementById('r8').style.visibility = "hidden";
document.getElementById('r9').style.visibility = "hidden";
document.getElementById('r10').style.visibility = "hidden";
document.getElementById('r11').style.visibility = "hidden";
document.getElementById('r12').style.visibility = "hidden";
document.getElementById('r13').style.visibility = "hidden";
document.getElementById('r14').style.visibility = "hidden";
document.getElementById('r15').style.visibility = "hidden";
document.getElementById('r16').style.visibility = "hidden";
document.getElementById('r17').style.visibility = "hidden";
document.getElementById('r18').style.visibility = "hidden";
document.getElementById('r19').style.visibility = "hidden";
document.getElementById('r20').style.visibility = "hidden";
var code = document.querySelectorAll('img');
function onmouse(){
if(code == (document.querySelectorAll('img').style.visibility = 'visible')){
for(i = 0; i < code; i++){
code[i] = (int)(Math.random() * 20);
}
}
}
}
</script>
</body>
我我曾多次尝试过这样做,但即使当我将兔子的全部可见性都隐藏起来的时候。我不知道我试过至少十次不同的尝试的程序有什么问题。这是一个报告,因为我以前的帖子中有人基本上用自己的观点发布了垃圾邮件,这与我的编程和问题无关。我正在试着理解。我猜可能我的for循环不会通过querySelector('img')检测数组;并且我还使用了一个css文件来隐藏嗡嗡声,而不是颜色:如果您想知道的话,请使用白色。我认为addEventListener也是一个问题。请帮助并让我明白我的脚本有什么问题。做这个工作。再次请不要评论我的编码的意见只是答案,可能会帮助我解决我遇到的这个问题。谢谢
什么问题? – Pointy
SO不存在为你做功课。 – gravityplanx
问题是我试过一切都不行。甚至隐藏兔子。当它只有四只兔子和四个不同的MyFunctions它可以工作,但我需要它在一个MyFunction中不是,onmouseover = MyFunction(),onemouseover = MyFunction2()等... – NarinderRSharma