首页 »Dreamweaver » js控制背景色:用户自己控制背景色的实现 »正文js控制背景色:用户自己控制背景色的实现来源: 发布时间:星期四, 2009年2月12日 浏览:340次 评论:0
特效演示: 把如下代码加入<body>区域中 <script language=\"JavaScript\"> <!-- Hiding var red=0; var green=0; var blue=0; var value=0; var convert = Array var hexbase= Array(\"0\", \"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\", \"A\", \"B\", \"C\", \"D\", \"E\", \"F\"); for (x=0; x<16; x){ for (y=0; y<16; y){ convert[value]= hexbase[x] + hexbase[y]; value; } } function clear{ document.color.bl.value= blue; document.color.rd.value= red; document.color.gr.value= green; } function display{ redx = convert[red] greenx = convert[green] bluex = convert[blue] var rgb = \"#\"+redx+greenx+bluex; document.color.rgbdspl.value= rgb; document.bgColor =rgb; } function upred(x){ ((red+x)<=255) redx document.color.rd.value= red; display } function downred(x){ ((red-x)>=0) red-=x document.color.rd.value= red; display } function upgreen(x){ ((green+x)<=255) greenx document.color.gr.value= green; display } function downgreen(x){ ((green-x)>=0) green-=x document.color.gr.value= green; display } function upblue(x){ ((blue+x)<=255) bluex document.color.bl.value= blue; display } function downblue(x){ ((blue-x)>=0) blue-=x document.color.bl.value= blue; display } // done hiding --> </script> <form name=\"color\"> <table> <tr align=\"Center\"> <td> <input name=\"red\" type=\"button\" value=\" +50 \" _disibledevent=></td> <td> <input name=\"red2\" type=\"button\" value=\" + 10 \" _disibledevent=></td> <td> <input name=\"red2\" type=\"button\" value=\" + 1\" _disibledevent=></td> <td width=\"50\"><font color=\"#FF0000\" size=+3><b><font color=\"#FA0000\">红</font></b></font></td> <td> <input name=\"red-\" type=\"button\" value=\" - 1\" _disibledevent=></td> <td> <input name=\"red-\" type=\"button\" value=\" - 10 \" _disibledevent=></td> <td> <input name=\"red-\" type=\"button\" value=\" -50 \" _disibledevent=></td> <td> <input type=\"text\" name=\"rd\" size=3> </td> </tr> <tr align=\"Center\"> <td> <input name=\"green\" type=\"button\" value=\" +50 \" _disibledevent=></td> <td> <input name=\"green\" type=\"button\" value=\" + 10 \" _disibledevent=></td> <td> <input name=\"green\" type=\"button\" value=\" + 1\" _disibledevent=></td> <td width=\"50\"><font color=\"#00FF00\" size=+3><b><font color=\"#00FA00\">绿</font></b></font></td> <td> <input name=\"green-\" type=\"button\" value=\" - 1\" _disibledevent=></td> <td> <input name=\"green-\" type=\"button\" value=\" - 10 \" _disibledevent=></td> <td> <input name=\"green-\" type=\"button\" value=\" -50 \" _disibledevent=></td> <td> <input type=\"text\" name=\"gr\" size=3> </td> </tr> <tr align=\"Center\"> <td> <input name=\"blue\" type=\"button\" value=\" +50 \" _disibledevent=></td> <td> <input name=\"blue\" type=\"button\" value=\" + 10 \" _disibledevent=></td> <td> <input name=\"blue\" type=\"button\" value=\" + 1\" _disibledevent=></td> <td width=\"50\"><font color=\"#0000FF\" size=+3><b><font color=\"#0000FA\">蓝</font></b></font></td> <td> <input name=\"blue-\" type=\"button\" value=\" - 1\" _disibledevent=></td> <td> <input name=\"blue-\" type=\"button\" value=\" - 10 \" _disibledevent=></td> <td> <input name=\"blue-\" type=\"button\" value=\" -50 \" _disibledevent=></td> <td> <input type=\"text\" name=\"bl\" size=3> </td> </tr> <tr align=\"Center\"> <td> </td> <td> </td> <td> </td> <td width=\"50\"> <input type=\"text\" name=\"rgbdspl\" size=7> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> </table> </form> 0
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