How to search text from page with next and previous functionality in jquery

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I am implementing the Text search functionality on page .I found lot of links .But i need more functionality .

Here is good example
http://jsfiddle.net/z7fjW/137/[^]

function searchAndHighlight(searchTerm, selector) {
    if(searchTerm) {
        //var wholeWordOnly = new RegExp("\\g"+searchTerm+"\\g","ig"); //matches whole word only
        //var anyCharacter = new RegExp("\\g["+searchTerm+"]\\g","ig"); //matches any word with any of search chars characters
        var selector = selector || "body";                             //use body as selector if none provided
        var searchTermRegEx = new RegExp(searchTerm,"ig");
        var matches = $(selector).text().match(searchTermRegEx);
        if(matches) {
            $('.highlighted').removeClass('highlighted');     //Remove old search highlights
                $(selector).html($(selector).html()
                    .replace(searchTermRegEx, "<span class="highlight" >"+searchTerm+"</span>"));
            if($('.highlighted:first').length) {             //if match found, scroll to where the first one appears
                $(window).scrollTop($('.highlighted:first').position().top);
            }
            return true;
        }
    }
    return false;
}

But I need it only search first word(present first) then using next it goes to next (go to next position).Then previous (go to previous position).as in note pad ? Is this possible in query?

Posted 7-Jul-13 20:36pm

ravi1989h

Updated 7-Jul-13 20:37pm

v2

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Prasad Khandekar · Answer 1 · 2013-07-08T02:47:00

Hello Ravi,

Please find below a test script done using JQuery[^] and JQuery Highlight plugin[^]. I hope it will get you started.

HTML

<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title> - jsFiddle demo</title>
<script type='text/javascript' src='static/js/jquery/jquery-1.10.2.js'></script>
<script type='text/javascript' src='static/js/jquery/jquery.highlight-4.js'></script>
<style type='text/css'>
body {font-family:Calibri,Tahoma,Verdana; }
input {font-family: inherit; }
input[type=button] {min-height:24px; min-width:64px; }
body p { font-family:Consolas; text-align:justified; margin: 10px; 0 0 0;}
.highlight { background-color:yellow; }
.emptyBlock1000 { height:auto; }
.emptyBlock2000 { height:auto; }
.current { background-color: #957F68 !important; color: #ffffff; }
</style>
<script type='text/javascript'>
var lstEl = null;
var cntr = -1;

$(document).ready(function() {
    $('#btnSearch').click(function() {
        lstEl = null;
        cntr = -1;
        var vl = document.getElementById('searchTerm').value;
        $("#bodyContainer").removeHighlight();
        $("#bodyContainer").highlight(vl);
    });

    $('#btnNext').click(function() {
        alert(cntr);
        if (lstEl === null) {
            lstEl = $('#bodyContainer').find('span.highlight');
            if (!lstEl || lstEl.length === 0) {
                lstEl = null;
                return;
            }
        }
        if (cntr < lstEl.length - 1) {
            cntr++;
            if (cntr > 0) {
                $(lstEl[0]).removeClass('current');
            }
            var elm = lstEl[cntr];
            $(elm).addClass('current');
        } else
            alert("End of search reached!");
    });

    $('#btnPrev').click(function() {
        alert(cntr);
        if (lstEl === null) {
            lstEl = $('#bodyContainer').find('span.highlight');
            if (!lstEl || lstEl.length === 0) {
                lstEl = null;
                return;
            }
        }
        if (cntr > 0) {
            cntr--;
            if (cntr < lstEl.length) {
                $(lstEl[cntr + 1]).removeClass('current');
            }
            var elm = lstEl[cntr];
            $(elm).addClass('current');
        } else
            alert("Begining of search!");
    });
});
</script>
</head>
<body>
    <br/>
    <form name="frmMain" id="frmMain" method="post">
        <input type="text" id="searchTerm" />
        <input type="button" id="btnSearch" value="search" />
        <input type="button" id="btnNext" value="next" />
        <input type="button" id="btnPrev" value="prev" />
    </form><br/>
    <div id="bodyContainer">
        <p class="emptyBlock1000">Empty Space to test Scrolling functionality</p>
        <p>Welcome to my search and highlight script</p>
        <p>By Tom Alexander<br/>
        Searching for terms can be done by using the browser's control (or cmd) + F feature.</p>
        <p>The problem is that not many people know about it and therefore its usefulness goes out the window</p>
        <p>Using this script, we can mimic that functionality by using a search box and button</p>
        <p>More text
            <p class="emptyBlock2000">Empty Space to test Scrolling functionality</p>
        </p>
    </div>
</body>
</html>

Regards,