要完成此效果需要三个步骤 第一步：把如下代码加入到区域中 <script LANGUAGE="JavaScript"> neonBaseColor = "White"; neonColor = "00ff00"; num = 0; num2 = 0; num3 = 0; num4 = neonColor; function startNeon() { message = neon.innerText; neon.innerText = ""; for(i = 0; i != message.length; i++) { neon.innerHTML += ""+message.charAt(i)+"<\/span>"}; neon2(); } function neon2() { if(num != message.length) { document.all.neond[num].style.color = neonColor; num++; setTimeout("neon2()", 100); } else { num = 0; num2 = message.length; setTimeout("neon4onev()", 2000); } } function neon4onev() { document.all.neond[num].style.color = neonBaseColor; document.all.neond[num2-1].style.color = neonBaseColor; if(Math.floor(message.length / 2) + 1 != num2) { num++; num2--; setTimeout("neon4onev()", 50); } else { setTimeout("neon5()", 50); } } function neon5() { if(num3 != message.length && num3 != message.length+1) { document.all.neond[num3].style.color = neonColor; num3 = num3 + 2; setTimeout("neon5()",100); } else { setTimeout("neon52()", 50); } } function neon52() { if(num3 == message.length) { num3++; neon52a(); } else { num3--; neon52a(); } } function neon52a() { if(num3 != 1) { num3 = num3 - 2; document.all.neond[num3].style.color = neonColor; setTimeout("neon52a()", 100); } else { if(num4 == neonColor) { num3 = 0; neonColor = neonBaseColor; setTimeout("neon5()", 2000); } else { neonColor = num4; num3 = 0; setTimeout("neon4onev2()", 50); } } } function neon4onev2() { document.all.neond[num].style.color = neonColor; document.all.neond[num2 - 1].style.color = neonColor; if(message.length != num2) { num--; num2++; setTimeout("neon4onev2()", 50); } else { num = 0; num2 = 0; setTimeout("neon3()", 2000); } } function neon3() { if(num != message.length) { document.all.neond[num].style.color = neonBaseColor; num++; setTimeout("neon3()", 100); } else { num = 0; neon2(); } } </script> 第二步：把如下代码加入到区域中 www.JsShow.com 第三步：把“onLoad="startNeon()"”加在标记里 例如：