這篇文章主要介紹了JavaScript實現動畫打開半透明提示層的方法,涉及javascript操作DOM的相關技巧,非常具有實用價值,需要的朋友可以參考下
本文實例講述了JavaScript實現動畫打開半透明提示層的方法。分享給大家供大家參考。具體如下：
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>DOM半透明提示層</title> <style type="text/css"> body,span,div,td{font-size:12px;line-height:1.5em;color:#849BCA;} #bodyL{ float:left; width:84px; margin-right:2px; } a.od{ width:80px; height:25px; line-height:25px; text-align:center; font-weight:bold; border: 2px solid #849BCA; display:block; color:#547BC9; float:left; text-decoration:none; margin-top:2px; } a.od:link{ background:#EEF1F8; } a.od:visited{ background:#EEF1F8; } a.od:hover{ background:#EEE; } a.od:active{ background:#EEE; } #fd{ width:500px; height:200px; background:#EDF1F8; border: 2px solid #849BCA; margin-top:2px; margin-left:2px; float:left; overflow:hidden; position:absolute; left:0px; top:0px; cursor:move; float:left; } .content{ padding:10px; } </style> </head> <body> <div id="bodyL"> <a href="#" class="od" onclick = "show('fd');return false;"> [打開層] </a> <a href="#" class="od" onclick = "closeed('fd');return false;"> [關閉層] </a> </div> <div id="fd" style="display:none;filter:alpha(opacity=100);opacity:1;"> <div class="content">移動層</div> </div> <script type="text/javascript"> var prox; var proy; var proxc; var proyc; function show(id){/*--打開--*/ clearInterval(prox); clearInterval(proy); clearInterval(proxc); clearInterval(proyc); var o = document.getElementById(id); o.style.display = "block"; o.style.width = "1px"; o.style.height = "1px"; prox = setInterval(function(){openx(o,500)},10); } function openx(o,x){/*--打開x--*/ var cx = parseInt(o.style.width); if(cx < x) { o.style.width = (cx + Math.ceil((x-cx)/5)) +"px"; } else { clearInterval(prox); proy = setInterval(function(){openy(o,200)},10); } } function openy(o,y){/*--打開y--*/ var cy = parseInt(o.style.height); if(cy < y) { o.style.height = (cy + Math.ceil((y-cy)/5)) +"px"; } else { clearInterval(proy); } } function closeed(id){/*--關閉--*/ clearInterval(prox); clearInterval(proy); clearInterval(proxc); clearInterval(proyc); var o = document.getElementById(id); if(o.style.display == "block") { proyc = setInterval(function(){closey(o)},10); } } function closey(o){/*--打開y--*/ var cy = parseInt(o.style.height); if(cy > 0) { o.style.height = (cy - Math.ceil(cy/5)) +"px"; } else { clearInterval(proyc); proxc = setInterval(function(){closex(o)},10); } } function closex(o){/*--打開x--*/ var cx = parseInt(o.style.width); if(cx > 0) { o.style.width = (cx - Math.ceil(cx/5)) +"px"; } else { clearInterval(proxc); o.style.display = "none"; } } /*鼠標拖動*/ var od = document.getElementById("fd"); var dx,dy,mx,my,mouseD; var odrag; var isIE = document.all ? true : false; document.onmousedown = function(e){ var e = e ? e : event; if(e.button == (document.all ? 1 : 0)) { mouseD = true; } } document.onmouseup = function(){ mouseD = false; odrag = ""; if(isIE) { od.releaseCapture(); od.filters.alpha.opacity = 100; } else { window.releaseEvents(od.MOUSEMOVE); od.style.opacity = 1; } } //function readyMove(e){ od.onmousedown = function(e){ odrag = this; var e = e ? e : event; if(e.button == (document.all ? 1 : 0)) { mx = e.clientX; my = e.clientY; od.style.left = od.offsetLeft + "px"; od.style.top = od.offsetTop + "px"; if(isIE) { od.setCapture(); od.filters.alpha.opacity = 50; } else { window.captureEvents(Event.MOUSEMOVE); od.style.opacity = 0.5; } //alert(mx); //alert(my); } } document.onmousemove = function(e){ var e = e ? e : event; //alert(mrx); //alert(e.button); if(mouseD==true && odrag) { var mrx = e.clientX - mx; var mry = e.clientY - my; od.style.left = parseInt(od.style.left) +mrx + "px"; od.style.top = parseInt(od.style.top) + mry + "px"; mx = e.clientX; my = e.clientY; } } </script><br/> <div>http://www.jb51.net/</div> </body> </html>希望本文所述對大家的javascript程序設計有所幫助。