因此,本書中的練習如下: 嘗試將其變成一個「抓住兔子」的遊戲,兔子隨時隨地移動它。 4次嘗試將鼠標懸停後,應顯示「無復活節彩蛋」消息。經過20次嘗試後,應顯示「人類吸食」。創建帶有固定寬度和高度的單個div元素的頁面,並在其周圍有一個邊框,其中包含一個正下方包含idso的p元素,您可以將其用作輸出。使用div上的onmousemove事件來計算事件觸發的次數,並在p元素中顯示計數。 首先我有一個迷你型的鍛鍊我嘗試下面的代碼:javascript試圖找到兔子代碼
<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>
這工作得很好,但實際行使希望它變成1周功能的MyFunction不Myfunction1,MyFunction的2等..和ofcourse 20張不同的兔子圖片而這一切,如果你4次嘗試中得到它,你獲得了「人類吮吸出現」,或者如果它的20倍以上,你得到「沒有復活節彩蛋你」所以後來我嘗試了以下內容:
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>
我我曾多次嘗試過這樣做,但即使當我將兔子的全部可見性都隱藏起來的時候。我不知道我試過至少十次不同的嘗試的程序有什麼問題。這是一個報告,因爲我以前的帖子中有人基本上用自己的觀點發布了垃圾郵件,這與我的編程和問題無關。我正在試着理解。我猜可能我的for循環不會通過querySelector('img')檢測數組;並且我還使用了一個css文件來隱藏嗡嗡聲,而不是顏色:如果您想知道的話,請使用白色。我認爲addEventListener也是一個問題。請幫助並讓我明白我的腳本有什麼問題。做這個工作。再次請不要評論我的編碼的意見只是答案,可能會幫助我解決我遇到的這個問題。謝謝
什麼問題? – Pointy
SO不存在爲你做功課。 – gravityplanx
問題是我試過一切都不行。甚至隱藏兔子。當它只有四隻兔子和四個不同的MyFunctions它可以工作,但我需要它在一個MyFunction中不是,onmouseover = MyFunction(),onemouseover = MyFunction2()等... – NarinderRSharma