Download tutorialStep 1: main page
This page contains the search engine input field, and show the search results into the layer <div id="search-result">
Add a link to javascript function inside the <head> tag:
<script language="javascript" src="ajax_framework.js"></script>
...and copy this code into the <body> tag:
<h2>Ajax Search Engine</h2>
<form id="searchForm" name="searchForm" method="post" action="javascript:insertTask();">
<div class="searchInput">
<input name="searchq" type="text" id="searchq" size="30" onkeyup="javascript:searchNameq()"/>
<input type="button" name="submitSearch" id="submitSearch" value="Search" onclick="javascript:searchNameq()"/>
</div>
</form>
<h3>Search Results</h3>
<div id="msg">Type something into the input field</div>
<div id="search-result"></div>
<form id="searchForm" name="searchForm" method="post" action="javascript:insertTask();">
<div class="searchInput">
<input name="searchq" type="text" id="searchq" size="30" onkeyup="javascript:searchNameq()"/>
<input type="button" name="submitSearch" id="submitSearch" value="Search" onclick="javascript:searchNameq()"/>
</div>
</form>
<h3>Search Results</h3>
<div id="msg">Type something into the input field</div>
<div id="search-result"></div>
Step 2: Javascript Function
This is the ajax_framework.js code:
/* ---------------------------- */
/* XMLHTTPRequest Enable */
/* ---------------------------- */
function createObject() {
var request_type;
var browser = navigator.appName;
if(browser == "Microsoft Internet Explorer"){
request_type = new ActiveXObject("Microsoft.XMLHTTP");
} else {
request_type = new XMLHttpRequest();
}
return request_type;
}
var http = createObject();
/* -------------------------- */
/* SEARCH */
/* -------------------------- */
function searchNameq() {
searchq = encodeURI(document.getElementById('searchq').value);
document.getElementById('msg').style.display = "block";
document.getElementById('msg').innerHTML = "Searching for <strong>" + searchq+"";
// Set te random number to add to URL request
nocache = Math.random();
http.open('get', 'in-search.php?name='+searchq+'&nocache = '+nocache);
http.onreadystatechange = searchNameqReply;
http.send(null);
}
function searchNameqReply() {
if(http.readyState == 4){
var response = http.responseText;
document.getElementById('search-result').innerHTML = response;
}
}
/* XMLHTTPRequest Enable */
/* ---------------------------- */
function createObject() {
var request_type;
var browser = navigator.appName;
if(browser == "Microsoft Internet Explorer"){
request_type = new ActiveXObject("Microsoft.XMLHTTP");
} else {
request_type = new XMLHttpRequest();
}
return request_type;
}
var http = createObject();
/* -------------------------- */
/* SEARCH */
/* -------------------------- */
function searchNameq() {
searchq = encodeURI(document.getElementById('searchq').value);
document.getElementById('msg').style.display = "block";
document.getElementById('msg').innerHTML = "Searching for <strong>" + searchq+"";
// Set te random number to add to URL request
nocache = Math.random();
http.open('get', 'in-search.php?name='+searchq+'&nocache = '+nocache);
http.onreadystatechange = searchNameqReply;
http.send(null);
}
function searchNameqReply() {
if(http.readyState == 4){
var response = http.responseText;
document.getElementById('search-result').innerHTML = response;
}
}
Step 3: search into database
This code searching for the name in input into the database. Take a look here to see dbconnection.php code:
<?php
include('dbconnection.php');
$searchq = $_GET['searchq'];
$getName_sql = 'SELECT * FROM USER
WHERE name LIKE "%' . $searchq .'%"
$getName = mysql_query($getTask_sql);
$total = mysql_num_rows(getTask);
while ($row = mysql_fetch_array($getName)) {
echo $row.name . '<br/>';
}
?>
include('dbconnection.php');
$searchq = $_GET['searchq'];
$getName_sql = 'SELECT * FROM USER
WHERE name LIKE "%' . $searchq .'%"
$getName = mysql_query($getTask_sql);
$total = mysql_num_rows(getTask);
while ($row = mysql_fetch_array($getName)) {
echo $row.name . '<br/>';
}
?>
Save all files and test them in your localhost! Remember to create a db table USER with a field name.
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