JS implementation of smart prompts like google and Baidu search boxes

Last Update:2015-04-21 Source: Internet

Author: User

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This article mainly introduces how to implement the smart prompts of input information in the search box of google and Baidu using javascript. The example shows how to implement the smart prompt function using javascript, which is of great practical value, for more information, see

This article describes how to implement smart prompts in the search box of google and Baidu using JavaScript. Share it with you for your reference. The details are as follows:

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<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN"

Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>

<Head>

<Title> implementation of smart prompts similar to input information in google and Baidu search boxes </title>

Body

{

Font: 11px arial;

}

. Suggest_link

{

Width: 120px;

Background-color: # FFFFFF;

Padding: 2px 6px 2px 6px;

}

. Suggest_link_over

{

Width: 120px;

Background-color: # E8F2FE;

Padding: 2px 6px 2px 6px;

}

# SuggestResult

{

Position: absolute;

Background-color: # FFFFFF;

Text-align: left;

Border: 1px solid #000000;

}

/* Input */

. Input_on

{

Padding: 2px 8px 0pt 3px;

Height: 18px;

Border: 1px solid #999;

Background-color: # FFFFCC;

}

. Input_off

{

Padding: 2px 8px 0pt 3px;

Height: 18px;

Border: 1px solid # CCC;

Background-color: # FFF;

}

. Input_move

{

Padding: 2px 8px 0pt 3px;

Height: 18px;

Border: 1px solid #999;

Background-color: # FFFFCC;

}

. Input_out

{

/* Height: 16px; default height */

Padding: 2px 8px 0pt 3px;

Height: 18px;

Border: 1px solid # CCC;

Background-color: # FFF;

}

</Style>

Var $ = document. getElementById;

// Create an XMLHttpRequest object

Function createXMLHttpRequest (){

Var obj;

If (window. XMLHttpRequest) {// Mozilla Browser

Obj = new XMLHttpRequest ();

}

Else if (window. ActiveXObject) {// IE browser

Try {

Obj = new ActiveXObject ("Msxml2.XMLHTTP ");

} Catch (e ){

Try {

Obj = new ActiveXObject ("Microsoft. XMLHTTP ");

} Catch (e ){}

}

Return obj;

}

// This function is called when the content in the input box changes.

Function searchSuggest (){

Var inputField = $ ("txtSearch ");

Var suggestText = $ ("suggestResult ");

If (inputField. value. length> 0 ){

Var o = createXMLHttpRequest ();

Var url = "SearchResult. ashx? SearchText = "+ escape (inputField. value );

O. open ("GET", url, true );

O. onreadystatechange = function (){

If (o. readyState = 4 ){

If (o. status = 200 ){

Var sourceItems = o. responseText. split ("\ n ");

If (sourceItems. length> 1 ){

SuggestText. style. display = "";

SuggestText. innerHTML = "";

For (var I = 0; I <sourceItems. length-1; I ++ ){

Var sourceText = sourceItems [I]. split ("@") [1];

Var sourceValue = sourceItems [I]. split ("@") [0];

Var s = "<div onmouseover = \" javascript: suggestOver (this );\"";

S + = "onmouseout = \" javascript: suggestOut (this );\"";

S + = "onclick = \" javascript: setSearch ('"+ sourceText +"', '"+ sourceValue + "');\"";

S + = "class = \" suggest_link \ ">" + sourceText + "</div> ";

SuggestText. innerHTML + = s;

}

Else {

SuggestText. style. display = "none ";

}

}; // Specify the Response Function

O. send (null); // send the request

}

Else {

SuggestText. style. display = "none ";

}

Function delayExecute (){

$ ("ValueResult"). value = "";

Window. setTimeout (function () {searchSuggest ()}, 800 );

// Delay processing

}

Function suggestOver (div_value ){

Div_value.className = "suggest_link_over ";

}

Function suggestOut (div_value ){

Div_value.className = "suggest_link ";

}

Function setSearch (a, B ){

$ ("TxtSearch"). value =;

$ ("ValueResult"). value = B;

Var div = $ ("suggestResult ");

Div. innerHTML = "";

Div. style. display = "none ";

}

Function showResult (){

Alert ($ ("txtSearch"). value + $ ("valueResult"). value );

}

</Script>

</Head>

<Body>

<Input type = "text" id = "txtSearch" name = "txtSearch" onkeyup = "delayExecute ();" size = "20"

Class = "input_out" onfocus = "this. className = 'input _ on'; this. onmouseout = ''"

Onblur = "this. className = 'input _ off'; this. onmouseout = function () {this. className = 'input _ out '};"

Onmousemove = "this. className = 'input _ move '" onmouseout = "this. className = 'input _ out'"/>

<Br/>

</Div>

<Br/>

</Form>

</Body>

</Html>

Server C # code

<% @ WebHandler Language = "C #" Class = "SearchResult" %>

Using System;

Using System. Web;

Using System. Data;

Public class SearchResult: IHttpHandler {

Public void ProcessRequest (HttpContext context ){

Object QueryWord = context. Request. QueryString ["searchText"];

If (QueryWord! = Null)

{

If (QueryWord. ToString (). Trim (). Length> 0)

{

DataTable dt = getDB ();

String returnText = "";

If (dt! = Null & dt. Rows. Count> 0)

{

DataRow [] dr = dt. Select ("name like '%" + QueryWord. ToString () + "% '");

If (dr. Length> 0)

{

For (int I = 0; I <dr. Length; I ++)

{

// You can set to return multiple strings.

ReturnText + = dr [I] ["id"]. ToString () + "@" + dr [I] ["name"]. ToString () + "\ n ";

}

Context. Response. Write (returnText );

Context. Response. End ();

}

Public bool IsReusable {

Get {

Return false;

}

/// <Summary>

/// Method for obtaining the data source

/// </Summary>

/// <Returns> data source </returns>

Private DataTable getDB ()

{

DataTable dt = new DataTable ();

Dt. Columns. Add ("id ");

Dt. Columns. Add ("name ");

Dt. Columns. Add ("age ");

Dt. Rows. Add (new object [] {"000001", "Zhang San", "26 "});

Dt. Rows. Add (new object [] {"000002", "Zhang Xiao", "26 "});

Dt. Rows. Add (new object [] {"000003", "Zhang Lan", "27 "});

Dt. Rows. Add (new object [] {"000004", "Li Si", "25 "});

Dt. Rows. Add (new object [] {"000005", "Li Xing", "27 "});

Return dt;

}

The preceding section describes how to implement the smart prompts of input information in the search box similar to google or Baidu using JS. We hope this article will help you design javascript programs.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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