要在打开网页时创建闪烁背景,请将以下JavaScript添加到网页正文中。
<script> function initArray() { this.length = initArray.arguments.length for (var i = 0; i < this.length; i++) this[i+1] = initArray.arguments[i] } var hexChars = " 0123456789ABCDEF”; 函数 Dec2Hex (Dec) { var a = Dec % 16; var b = (Dec - a)/16; hex = "" + hexChars.charAt(b) + hexChars.charAt(a); 返回十六进制; } 函数 bgChanger (开始、结束、步骤) { 步骤 = 步骤 -1 ; redA = begin.charAt(0) + begin.charAt(1); red_valA = parseInt(redA,'16'); redB = end.charAt(0) + end.charAt(1); red_valB = parseInt(redB,'16'); red_int = ((red_valB - red_valA) / 步骤) * -1; grnA = begin.charAt(2) + 开始。 grn_valA = parseInt(grnA,'16'); grnB = end.charAt(2) + end.charAt(3); grn_valB = parseInt(grnB,'16'); grn_int = ((grn_valB - grn_valA) / 步骤) * -1; bluA = begin.charAt(4) + begin.charAt(5); blu_valA = parseInt(bluA,'16'); bluB = end.charAt(4) + end.charAt(5); blu_valB = parseInt(bluB,'16'); blu_int = ((blu_valB - blu_valA) / 步骤) * -1; 步骤=2; 红色 = red_valA; grn = grn_valA; 蓝色=蓝色_valA; document.bgColor = 开始; while ( 步骤 >= 步骤 ) { red -= red_int; red_round = Math.round(红色); red_hex = Dec2Hex(红色); grn -= grn_int; grn_round = Math.round(grn); grn_hex = Dec2Hex(grn); 蓝色 -= blu_int; blu_round = Math.round(blu); blu_hex = Dec2Hex(blu); document.bgColor = red_hex + grn_hex + blu_hex; // document.write("<br>bgcolor = " + red_hex + grn_hex + blu_hex); 步骤++; } 文档.bgColor = 结束; } </script> <script> <!-- // 黑到黑(暂停) bgChanger("000000","000000",25); // 黑转红 bgChanger("000000","FF0000",25); // 红转黑 bgChanger("FF0000","000000",25); // 黑色到紫色 bgChanger("000000","AA00EE",25); // 紫转黑 bgChanger("AA00EE", “000000”,25); // 黑转蓝 bgChanger("000000","0000FF",25); // 蓝转黑 bgChanger("0000FF","000000",25); // 黑到白(暂停) bgChanger("000000","FFFFFF",25); // --> </脚本>