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| 1 | +<!DOCTYPE html> |
| 2 | +<html lang="en"> |
| 3 | +<head> |
| 4 | + <meta charset="UTF-8"> |
| 5 | + <title>Document</title> |
| 6 | + <style> |
| 7 | + *{ |
| 8 | + margin: 0; |
| 9 | + padding: 0; |
| 10 | + border: none; |
| 11 | + text-decoration: none; |
| 12 | + list-style: none; |
| 13 | + font-family: "微软雅黑"; |
| 14 | + } |
| 15 | + body{ |
| 16 | + background: #41EECB; |
| 17 | + |
| 18 | + } |
| 19 | + .warp{ |
| 20 | + position: relative;/*如果要设置 全屏 必须 加上相对定位*/ |
| 21 | + width: 100%; |
| 22 | + border-radius: 10px; |
| 23 | + } |
| 24 | + .div_1, |
| 25 | + .div_2{ |
| 26 | + position: absolute; |
| 27 | + top: 0px; |
| 28 | + left:0px; |
| 29 | + |
| 30 | + width: 100px; |
| 31 | + height: 100px; |
| 32 | + background: #FCD78E; |
| 33 | + border-radius: 5px; |
| 34 | + cursor:pointer; |
| 35 | + } |
| 36 | + .div_2{ |
| 37 | + background: #FC5185; |
| 38 | + } |
| 39 | + </style> |
| 40 | +</head> |
| 41 | +<body> |
| 42 | + <div class="warp"> |
| 43 | + <div class="div_1"></div> |
| 44 | + <div class="div_2"></div> |
| 45 | + </div> |
| 46 | +</body> |
| 47 | + |
| 48 | +<script type="text/javascript"> |
| 49 | + window.onload = function() |
| 50 | + { |
| 51 | + var oDiv = document.querySelector(".div_1"); |
| 52 | + var oDiv2 = document.querySelector(".div_2"); |
| 53 | + var left = false; |
| 54 | + var top = false; |
| 55 | + var right = false; |
| 56 | + var bottom = false; |
| 57 | + var speed = 3; |
| 58 | + |
| 59 | + setInterval(oMove,30); |
| 60 | + function oMove() |
| 61 | + { |
| 62 | + if(right) |
| 63 | + { |
| 64 | + oDiv.style.left = oDiv.offsetLeft + speed +"px"; |
| 65 | + console.log(1); |
| 66 | + } |
| 67 | + if(left) |
| 68 | + { |
| 69 | + oDiv.style.left = oDiv.offsetLeft - speed +"px"; |
| 70 | + console.log(2); |
| 71 | + } |
| 72 | + if(top) |
| 73 | + { |
| 74 | + oDiv.style.top = oDiv.offsetTop - speed +"px"; |
| 75 | + console.log(3); |
| 76 | + } |
| 77 | + if(bottom) |
| 78 | + { |
| 79 | + oDiv.style.top = oDiv.offsetTop + speed +"px"; |
| 80 | + console.log(4); |
| 81 | + } |
| 82 | + } |
| 83 | + |
| 84 | + /* |
| 85 | + *按键检测 用docment |
| 86 | + *ev = ev||event; |
| 87 | + */ |
| 88 | + document.onkeydown = function(ev) |
| 89 | + { |
| 90 | + var ev = ev || event; |
| 91 | + var evCode = ev.keyCode; //37 38 39 40 |
| 92 | + //switch 语句 |
| 93 | + switch(evCode) |
| 94 | + { |
| 95 | + case 37: left=true; break; |
| 96 | + case 38: top=true; break; |
| 97 | + case 39: right=true; break; |
| 98 | + case 40: bottom=true; break; |
| 99 | + } |
| 100 | + } |
| 101 | + document.onkeyup = function(ev) |
| 102 | + { |
| 103 | + var ev = ev || event; |
| 104 | + var evCode = ev.keyCode; |
| 105 | + switch(evCode) |
| 106 | + { |
| 107 | + case 37: left=false;break; |
| 108 | + case 38: top = false;break; |
| 109 | + case 39: right = false;break; |
| 110 | + case 40: bottom =false;break; |
| 111 | + } |
| 112 | + } |
| 113 | + run(oDiv); |
| 114 | + run(oDiv2); |
| 115 | + /*谷歌里面的 自我保护 出现 禁止现象*/ |
| 116 | + function run(ball) |
| 117 | + { |
| 118 | + ball.onmousedown = function(ev) |
| 119 | + { |
| 120 | + var _this = this; |
| 121 | + var ev =ev||event; |
| 122 | + var x =ev.clientX -this.offsetLeft; |
| 123 | + var y =ev.clientY -this.offsetTop ; |
| 124 | + window.onmousemove = function(ev){ |
| 125 | + ball.style.left =ev.clientX -x + "px"; |
| 126 | + ball.style.top =ev.clientY -y + "px"; |
| 127 | + } |
| 128 | + window.onmouseup = function(ev) |
| 129 | + { |
| 130 | + window.onmousemove=null; |
| 131 | + } |
| 132 | + } |
| 133 | + } |
| 134 | + } |
| 135 | +</script> |
| 136 | + |
| 137 | +</html> |
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