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68、闪烁的窗体
===1、将以下代码加入HTML的<HEAD></HEAD>之间： <script LANGUAGE="JavaScript"> <!-- function toHex(dec) { // create list of hex characters var hexCharacters = "0123456789ABCDEF" // if number is out of range return limit if (dec < 0) return "00" if (dec > 255) return "FF" // decimal equivalent of first hex character in converted number var i = Math.floor(dec / 16) // decimal equivalent of second hex character in converted number var j = dec % 16 // return hexadecimal equivalent return hexCharacters.charAt(i) + hexCharacters.charAt(j) } // set background color to specified descriptors function setbgColor(red, green, blue) { document.bgColor = "#" + toHex(red) + toHex(green) + toHex(blue) } // fade from start to end descriptors (increase step to increase transition speed) function fade(sred, sgreen, sblue, ered, egreen, eblue, step) { // loop to create fade effect for(var i = 0; i <= step; ++i) { // set current red descriptor var red = Math.floor(sred * ((step - i) / step) + ered * (i / step)) // set current green descriptor var green = Math.floor(sgreen * ((step - i) / step) + egreen * (i / step)) // set current green descriptor var blue = Math.floor(sblue * ((step - i) / step) + eblue * (i / step)) // set background color according to descriptors setbgColor(red, green, blue) } } // --> </script> ====2、将以下代码加入HTML的<BODY></BODY>之间： <body TEXT="red" onLoad="fade(0, 0, 0, 255, 255, 255, 64)" onUnload="fade(255, 255, 255,0, 0, 0, 64)"> |
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