自动提示文本
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><title>自动提示的文本框</title><style><!--body{font-family:Arial, Helvetica, sans-serif;font-size:12px; padding:0px; margin:5px;}form{padding:0px; margin:0px;}input{/* 用户输入框的样式 */font-family:Arial, Helvetica, sans-serif;font-size:12px; border:1px solid #000000;width:200px; padding:1px; margin:0px;}#popup{/* 提示框div块的样式 */position:absolute; width:202px;color:#004a7e; font-size:12px;font-family:Arial, Helvetica, sans-serif;left:41px; top:25px;}#popup.show{/* 显示提示框的边框 */border:1px solid #004a7e;}#popup.hide{/* 隐藏提示框的边框 */border:none;}/* 提示框的样式风格 */ul{list-style:none;margin:0px; padding:0px;}li.mouseOver{background-color:#004a7e;color:#FFFFFF;}li.mouseOut{background-color:#FFFFFF;color:#004a7e;}--></style><script language="javascript">var oInputField;//考虑到很多函数中都要使用var oPopDiv;//因此采用全局变量的形式var oColorsUl;var aColors = ["red","green","blue","magenta","yellow","chocolate","black","aquamarine","lime","fuchsia","brass","azure","brown","bronze","deeppink","aliceblue","gray","copper","coral","feldspar","orange","orchid","pink","plum","quartz","purple","antiquewith","blanchedalmond","blueviolet","beige","burlywood","bisque","cadetblue","saddlebrown","royalblue","rosybrown","orengered","olivedrab","powderblue","peachpuff","papayawhip","paleturquoise","palevioletred","palegreen","navyblue","navajowhite","palegodenrod","violetred","yellowgreen","tomato","turquoise","thistle","springgreen","steelblue","salmon","scarlet","silver","violet","snow","tan","chartreuse","khaki","mediumslateblue","mediumvioletred","oldlace","maroom","goldenrod","wheat","whitesmoke","moccasin","mistyrose","mintcream","midnightblue","dimgray","darksalmon","slategray","skyblue","sienna","seashell","seagreen","sandybrown","gold","mediumturquoise","navy","mediumspringgreen","mediumseagreen","mediumpurpul","peru","mediumorchid","mediumblue","mediumaquamarine","maroon","limegreen","lightyellow","lightsteelblue","magenta","lightslateblue","lightslategray","lightskyblue","inen","lightseagreen","lightsalmon","lightpink","lightgray","lightgreen","lightgodenrodyellow","indianred","lavender","lightblue","lavenderblush","lightcoral","lightcyan","lightgodenrod","hotpink","greenyellow","lemonchiffon","lawngreen","deepskyblue","honeydew","golenrod","forestgreen","gostwhite","gainsboro","firebrick","dodgerblue","darkturquoise","darkslateblue","darkslategray","darkseagreen","darkred","darkorchid","darkorenge","darkviolet","floralwhite","cyan","darkgray","cornsilk","darkolivegreen","darkgoldenrod","darkblue","darkcyan","darkgreen","darkhaki","ivory","darkmagenta","cornfloewrblue"];aColors.sort();//按字母排序，使显示结果更友好function initVars(){//初始化变量oInputField = document.forms["myForm1"].colors;oPopDiv = document.getElementById("popup");oColorsUl = document.getElementById("colors_ul");}function clearColors(){//清除提示内容for(var i=oColorsUl.childNodes.length-1;i>=0;i--)oColorsUl.removeChild(oColorsUl.childNodes[i]);oPopDiv.className = "hide";}function setColors(the_colors){//显示提示框，传入的参数即为匹配出来的结果组成的数组clearColors();//每输入一个字母就先清除原先的提示，再继续oPopDiv.className = "show";var oLi;for(var i=0;i<the_colors.length;i++){//将匹配的提示结果逐一显示给用户oLi = document.createElement("li");oColorsUl.appendChild(oLi);oLi.appendChild(document.createTextNode(the_colors[i]));oLi.onmouseover = function(){this.className = "mouseOver";//鼠标经过时高亮}oLi.onmouseout = function(){this.className = "mouseOut";//离开时恢复原样}oLi.onclick = function(){//用户点击某个匹配项时，设置输入框为该项的值oInputField.value = this.firstChild.nodeValue;clearColors();//同时清除提示框}}}function findColors(){initVars();//初始化变量if(oInputField.value.length > 0){var aResult = new Array();//用于存放匹配结果for(var i=0;i<aColors.length;i++)//从颜色表中找匹配的颜色//必须是从单词的开始处匹配if(aColors[i].indexOf(oInputField.value) == 0)aResult.push(aColors[i]);//压入结果if(aResult.length>0)//如果有匹配的颜色则显示出来setColors(aResult);else//否则清除，用户多输入一个字母clearColors();//就有可能从有匹配到无，到无的时候需要清除}elseclearColors();//无输入时清除提示框（例如用户按del键）}</script></head><body><form method="post" name="myForm1">Color: <input type="text" name="colors" id="colors" onkeyup="findColors();" /></form><div id="popup"><ul id="colors_ul"></ul></div></body></html>?