質問編集履歴
1
インデント
title
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File without changes
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body
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@@ -11,17 +11,17 @@
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11
11
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<html>
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<head>
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<meta charset="utf-8">
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<meta charset="utf-8">
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<title>game</title>
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<title>game</title>
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<style>
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#ball{
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width:50px;
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width:50px;
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height:50px;
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height:50px;
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border-radius:50%;
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border-radius:50%;
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top:300px;
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top:300px;
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left:300px;
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left:300px;
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background-color:black;
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background-color:black;
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position:absolute;
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position:absolute;
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}
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</style>
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@@ -29,34 +29,33 @@
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</head>
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<body>
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<div id="ball"></div>
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<div id="ball"></div>
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34
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<input type="button" value="up" id="up" onclick="up()">
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<input type="button" value="up" id="up" onclick="up()">
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</body>
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<script>
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function up(){
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function up(){
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var ball=document.getElementById("ball");
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var ball=document.getElementById("ball");
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var dis=Math.floor(Math.random()*300);
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var dis=Math.floor(Math.random()*300);
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var dis1=10;
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var dis1=10;
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var st=ball.style.top;
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var st=ball.style.top;
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if(st<100){
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if(st<100){
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ball.style.top=-dis;
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ball.style.top=-dis;
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}else if(st>300){
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}else if(st>300){
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alert("stop");
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alert("stop");
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}else{
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}else{
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ball.style.top=dis;
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ball.style.top=dis;
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}
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}
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};
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};
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</script>
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</html>
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