自动提示的文本框(无异步交互)

来源：互联网发布：金蝶erp软件免费版编辑：程序博客网时间：2024/04/27 17:00

<!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>

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

//alert(this);alert(this.tagName);alert(this.firstChild);

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

}

else

clearColors(); //无输入时清除提示框（例如用户按del键）

}

</script>

</head>

<body>

Color: <input type="text" name="colors" id="colors" onkeyup="findColors();" />

</form>

</div>

</body>

</html>