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金沙棋牌在线 > 服务器&运维 > JS实现仿百度输入框自动匹配功能的示例代码介绍

JS实现仿百度输入框自动匹配功能的示例代码介绍

时间:2019-12-29 06:39

现在很多网站都有这种效果,在文本框输入一个字符,下边会出来相匹配的内容,这个代码就演示了这个功能是如何完成的,当然,这是个静态的,你可以将提示的内容从数据库读取出来,要用到AJAX那东东。复制代码 代码如下:

JS实现仿百度输入框自动匹配功能的示例代码介绍

 本篇文章主要是对JS实现仿百度输入框自动匹配功能的示例代码进行了介绍,需要的朋友可以过来参考下,希望对大家有所帮助

现在很多网站都有这种效果,在文本框输入一个字符,下边会出来相匹配的内容,这个代码就演示了这个功能是如何完成的,当然,这是个静态的,你可以将提示的内容从数据库读取出来,要用到AJAX那东东。

 

 代码如下:

<HTML>

<HEAD>

<title>带输入匹配的文本框</title>

<style>

body,div {

font-family:verdana;

line-height:100%;

font-size:10pt;

}

input {

width:320px;

}

h1 {

text-align:center;

font-size:2.2em;

}

#divc {

border:1px solid #555;

}

.des {

width:500px;

background-color:lightyellow;

border:1px solid #555;

padding:25px;

margin-top:25px;

}

.mouseover {

color:#ffffff;

background-color:highlight;

width:100%;

cursor:default;

}

.mouseout {

color:#000;

width:100%;

background-color:#ffffff;

cursor:default;

}

</style>

<SCRIPT LANGUAGE="JavaScript">

<!--

function jsAuto(instanceName,objID)

{

this._msg = [];

this._x = null;

this._o = document.getElementById( objID );

if (!this._o) return;

this._f = null;

this._i = instanceName;

this._r = null;

this._c = 0;

this._s = false;

this._v = null;

this._o.style.visibility = "hidden";

this._o.style.position = "absolute";

this._o.style.zIndex = "9999";

this._o.style.overflow = "auto";

this._o.style.height = "50";

return this;

};

 

 

jsAuto.prototype.directionKey=function() { with (this)

{

var e = _e.keyCode ? _e.keyCode : _e.which;

var l = _o.childNodes.length;

(_c>l-1 || _c<0) ? _s=false : "";

 

 

if( e==40  &&  _s )

{

_o.childNodes[_c].className="mouseout";

(_c >= l-1) ? _c=0 : _c ++;

_o.childNodes[_c].className="mouseover";

}

if( e==38  &&  _s )

{

_o.childNodes[_c].className="mouseout";

_c--<=0 ? _c = _o.childNodes.length-1 : "";

_o.childNodes[_c].className="mouseover";

}

if( e==13 )

{

if(_o.childNodes[_c]  &&  _o.style.visibility=="visible")

{

_r.value = _x[_c];

_o.style.visibility = "hidden";

}

}

if( !_s )

{

_c = 0;

_o.childNodes[_c].className="mouseover";

_s = true;

}

}};

 

 

// mouseEvent.

jsAuto.prototype.domouseover=function(obj) { with (this)

{

_o.childNodes[_c].className = "mouseout";

_c = 0;

obj.tagName=="DIV" ? obj.className="mouseover" : obj.parentElement.className="mouseover";

}};

jsAuto.prototype.domouseout=function(obj)

{

obj.tagName=="DIV" ? obj.className="mouseout" : obj.parentElement.className="mouseout";

};

jsAuto.prototype.doclick=function(msg) { with (this)

{

if(_r)

{

_r.value = msg;

_o.style.visibility = "hidden";

}

else

{

alert("javascript autocomplete ERROR :nn can not get return object.");

return;

}

}};

 

 

// object method;

jsAuto.prototype.item=function(msg)

{

if( msg.indexOf(",")>0 )

{

var arrMsg=msg.split(",");

for(var i=0; i<arrMsg.length; i++)

{

arrMsg[i] ? this._msg.push(arrMsg[i]) : "";

}

}

else

{

this._msg.push(msg);

}

this._msg.sort();

};

jsAuto.prototype.append=function(msg) { with (this)

{

_i ? "" : _i = eval(_i);

_x.push(msg);

var div = document.createElement("DIV");

//bind event to object.

div.onmouseover = function(){_i.domouseover(this)};

div.onmouseout = function(){_i.domouseout(this)};

div.onclick = function(){_i.doclick(msg)};

var re  = new RegExp("(" + _v + ")","i");

div.style.lineHeight="140%";

div.className = "mouseout";

if (_v) div.innerHTML = msg.replace(re , "<strong>$1</strong>");

div.style.fontFamily = "verdana";

 

 

_o.appendChild(div);

}};

jsAuto.prototype.display=function() { with(this)

{

if(_f && _v!="")

{

_o.style.left = _r.offsetLeft;

_o.style.width = _r.offsetWidth;

_o.style.top = _r.offsetTop + _r.offsetHeight;

_o.style.visibility = "visible";

}

else

{

_o.style.visibility="hidden";

}

}};

jsAuto.prototype.handleEvent=function(fValue,fID,event) { with (this)

{

var re;

_e = event;

var e = _e.keyCode ? _e.keyCode : _e.which;

_x = [];

_f = false;

_r = document.getElementById( fID );

_v = fValue;

_i = eval(_i);

re = new RegExp("^" + fValue + "", "i");

_o.innerHTML="";

 

 

for(var i=0; i<_msg.length; i++)

{

if(re.test(_msg[i]))

{

_i.append(_msg[i]);

_f = true;

}

}

 

 

_i ? _i.display() : alert("can not get instance");

 

 

if(_f)

{

if((e==38 || e==40 || e==13))

{

_i.directionKey();

}

else

{

_c=0;

_o.childNodes[_c].className = "mouseover";

_s=true;

}

}

}};

window.onerror=new Function("return true;");

//-->

</SCRIPT>

</HEAD>

 

 

<BODY>

<div id="divc">

<!--this is the autocomplete container.-->

</div>

<div align="center">

<input onkeyup="jsAutoInstance.handleEvent(this.value,'auto',event)" id="auto">

</div>

 

 

<SCRIPT LANGUAGE="JavaScript">

<!--

var jsAutoInstance = new jsAuto("jsAutoInstance","divc");

jsAutoInstance.item("a-start,b-start,c-start,d-start,e-start,f-start,g-start,h-start,i-start,j-start,k-start,l-start,m-start,n-start,o-start,p-start,q-start,r-start,s-start,t-start,u-start,v-start,w-start,x-start,y-start,z-start,z-start,a-start,b-start,c-start,d-start,e-start,f-start,g-start,h-start,i-start,j-start,k-start,l-start,m-start,n-start,o-start,p-start,q-start,r-start,s-start,t-start,u-start,v-start,w-start,x-start,y-start,z-start,u-start,v-start,w-start,x-start,y-start,z-start,z-start,a-start,b-start,c-start,y-start,z-start,z-start,a-start,b-start,c-start,d-start,e-start,f-start,g-start,h-start,i-start,s-start,w-start,x-start,y-start,z-start,z-start,a-start,b-start,c-start,d-start,e-start,f-start,g-start,h-start,i-start,a-start,b-start,c-start,d-start,e-start,z-start,z-start");

jsAutoInstance.item("blueDestiny");

jsAutoInstance.item("BlueMiracle,Blue");

jsAutoInstance.item("angela,geniuslau");

jsAutoInstance.item("never-online");

//-->

</SCRIPT>

<center>请在输入框输入一个字母:</center>

</BODY>

</HTML> 

本篇文章主要是对JS实现仿百度输入框自动匹配功能的示例代码进行了介绍,需要的朋友...

带输入匹配的文本框