Js实现带自动提示的文本框效果

php中文网

发布时间：2016-07-25 09:12:45

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来源于php中文网

原创

分享二个自动提示的文本框效果的js实现代码。

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例一，直接编写AJAX 实现。客户端：

Ajax实现自动提示的文本框_bbs.it-home.org
<script language="javascript"> </script>
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 xmlHttp;
function createXMLHttpRequest(){
if(window.ActiveXObject)
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
else if(window.XMLHttpRequest)
xmlHttp = new XMLHttpRequest();
}
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
//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){
createXMLHttpRequest(); //将用户输入发送给服务器
var sUrl = "9-10.aspx?sColor=" + oInputField.value + "×tamp=" + new Date().getTime();
xmlHttp.open("GET",sUrl,true);
xmlHttp.onreadystatechange = function(){
if(xmlHttp.readyState == 4 && xmlHttp.status == 200){
var aResult = new Array();
if(xmlHttp.responseText.length){
aResult = xmlHttp.responseText.split(",");
setColors(aResult); //显示服务器结果
} bbs.it-home.org
else
clearColors();
}
}
xmlHttp.send(null);
}
else
clearColors(); //无输入时清除提示框（例如用户按del键）
}
Color:

复制代码

服务器端（9-10.aspx ）：

Response.CacheControl = "no-cache";
Response.AddHeader("Pragma","no-cache");
string sInput = Request["sColor"].Trim();
if(sInput.Length == 0)
return;
string sResult = "";
string[] aColors = new string[]{"aliceblue","antiquewith","aquamarine","azure","beige","bisque","black","blanchedalmond","blue","blueviolet","brass",
"bronze","brown","burlywood","cadetblue","chartreuse","chocolate","copper","coral","cornfloewrblue","cornsilk","cyan",
"darkblue","darkcyan","darkgoldenrod","darkgray","darkgreen","darkhaki","darkmagenta","darkolivegreen","darkorchid",
"darkorenge","darkred","darksalmon","darkseagreen","darkslateblue","darkslategray","darkturquoise","darkviolet","deeppink",
"deepskyblue","dimgray","dodgerblue","feldspar","firebrick","floralwhite","forestgreen","fuchsia","gainsboro","gold","goldenrod",
"golenrod","gostwhite","gray","green","greenyellow","honeydew","hotpink","indianred","inen","ivory","khaki","lavender",
"lavenderblush","lawngreen","lemonchiffon","lightblue","lightcoral","lightcyan","lightgodenrod","lightgodenrodyellow","lightgray",
"lightgreen","lightpink","lightsalmon","lightseagreen","lightskyblue","lightslateblue","lightslategray","lightsteelblue","lightyellow",
"lime","limegreen","magenta","magenta","maroom","maroon","mediumaquamarine","mediumblue","mediumorchid","mediumpurpul",
"mediumseagreen","mediumslateblue","mediumspringgreen","mediumturquoise","mediumvioletred","midnightblue","mintcream",
"mistyrose","moccasin","navajowhite","navy","navyblue","oldlace","olivedrab","orange","orchid","orengered","palegodenrod",
"palegreen","paleturquoise","palevioletred","papayawhip","peachpuff","peru","pink","plum","powderblue","purple","quartz","red",
"rosybrown","royalblue","saddlebrown","salmon","sandybrown","scarlet","seagreen","seashell","sienna","silver","skyblue","slategray",
"snow","springgreen","steelblue","tan","thistle","tomato","turquoise","violet","violetred","wheat","whitesmoke","yellow","yellowgreen"};
for(int i=0;i
if(aColors[i].IndexOf(sInput) == 0)
sResult += aColors[i] + ",";
}
if(sResult.Length>0) //如果有匹配项
sResult = sResult.Substring(0,sResult.Length-1); //去掉最后的“,”号
Response.Write(sResult);
%>

复制代码

例二，使用jQuery 实现。客户端：

jQuery实现自动提示的文本框
<script language="javascript" src="jquery.min.js"></script>
<script language="javascript"> </script>
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;
function initVars(){
//初始化变量
oInputField = $("#colors");
oPopDiv = $("#popup");
oColorsUl = $("#colors_ul");
}
function clearColors(){
//清除提示内容
oColorsUl.empty();
oPopDiv.removeClass("show");
}
function setColors(the_colors){
//显示提示框，传入的参数即为匹配出来的结果组成的数组
clearColors(); //每输入一个字母就先清除原先的提示，再继续
oPopDiv.addClass("show");
for(var i=0;i
//将匹配的提示结果逐一显示给用户
oColorsUl.append($("
"+the_colors[i]+"
oColorsUl.find("li").click(function(){
oInputField.val($(this).text());
clearColors();
}).hover(
function(){$(this).addClass("mouseOver");},
function(){$(this).removeClass("mouseOver");}
);
}
function findColors(){
initVars(); //初始化变量
if(oInputField.val().length > 0){
//获取异步数据
$.get("14-10.aspx",{sColor:oInputField.val()},
function(data){
var aResult = new Array();
if(data.length > 0){
aResult = data.split(",");
setColors(aResult); //显示服务器结果
} bbs.it-home.org
else
clearColors();
});
}
else
clearColors(); //无输入时清除提示框（例如用户按del键）
}
Color:

复制代码

服务器端（14-10.aspx ）：

Response.CacheControl = "no-cache";
Response.AddHeader("Pragma","no-cache");
string sInput = Request["sColor"].Trim();
if(sInput.Length == 0)
return;
string sResult = "";
string[] aColors = new string[]{"aliceblue","antiquewith","aquamarine","azure","beige","bisque","black","blanchedalmond","blue","blueviolet","brass","bronze",
"brown","burlywood","cadetblue","chartreuse","chocolate","copper","coral","cornfloewrblue","cornsilk","cyan","darkblue","darkcyan",
"darkgoldenrod","darkgray","darkgreen","darkhaki","darkmagenta","darkolivegreen","darkorchid","darkorenge","darkred","darksalmon",
"darkseagreen","darkslateblue","darkslategray","darkturquoise","darkviolet","deeppink","deepskyblue","dimgray","dodgerblue",
"feldspar","firebrick","floralwhite","forestgreen","fuchsia","gainsboro","gold","goldenrod","golenrod","gostwhite","gray","green",
"greenyellow","honeydew","hotpink","indianred","inen","ivory","khaki","lavender","lavenderblush","lawngreen","lemonchiffon",
"lightblue","lightcoral","lightcyan","lightgodenrod","lightgodenrodyellow","lightgray","lightgreen","lightpink","lightsalmon",
"lightseagreen","lightskyblue","lightslateblue","lightslategray","lightsteelblue","lightyellow","lime","limegreen","magenta",
"magenta","maroom","maroon","mediumaquamarine","mediumblue","mediumorchid","mediumpurpul","mediumseagreen",
"mediumslateblue","mediumspringgreen","mediumturquoise","mediumvioletred","midnightblue","mintcream","mistyrose",
"moccasin","navajowhite","navy","navyblue","oldlace","olivedrab","orange","orchid","orengered","palegodenrod","palegreen",
"paleturquoise","palevioletred","papayawhip","peachpuff","peru","pink","plum","powderblue","purple","quartz","red","rosybrown",
"royalblue","saddlebrown","salmon","sandybrown","scarlet","seagreen","seashell","sienna","silver","skyblue","slategray","snow",
"springgreen","steelblue","tan","thistle","tomato","turquoise","violet","violetred","wheat","whitesmoke","yellow","yellowgreen"};
for(int i=0;i
if(aColors[i].IndexOf(sInput) == 0)
sResult += aColors[i] + ",";
}
if(sResult.Length>0) //如果有匹配项
sResult = sResult.Substring(0,sResult.Length-1); //去掉最后的“,”号
Response.Write(sResult);
%>