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Discussione: Ricerca nella pagina

  1. #1
    Utente di HTML.it L'avatar di Diurno
    Registrato dal
    Nov 2004
    Messaggi
    217

    Ricerca nella pagina

    questo codice fa in modo di trovare la parola che scrivi in una casella di ricerca all'interno della pagina visualizzata, evidenziando il risultato,posso fare in modo che mi evidenzi tutta la riga nel quale si trova la parola?


    <script>
    <!-- Hide from old browsers

    var TRange = null;
    var dupeRange = null;
    var TestRange = null;
    var win = null;


    // SELECTED BROWSER SNIFFER COMPONENTS DOCUMENTED AT
    // http://www.mozilla.org/docs/web-deve...wser_type.html

    var nom = navigator.appName.toLowerCase();
    var agt = navigator.userAgent.toLowerCase();
    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);
    var is_ie = (agt.indexOf("msie") != -1);
    var is_ie4up = (is_ie && (is_major >= 4));
    var is_not_moz = (agt.indexOf('netscape')!=-1)
    var is_nav = (nom.indexOf('netscape')!=-1);
    var is_nav4 = (is_nav && (is_major == 4));
    var is_mac = (agt.indexOf("mac")!=-1);
    var is_gecko = (agt.indexOf('gecko') != -1);
    var is_opera = (agt.indexOf("opera") != -1);


    // GECKO REVISION

    var is_rev=0
    if (is_gecko) {
    temp = agt.split("rv:")
    is_rev = parseFloat(temp[1])
    }


    // USE THE FOLLOWING VARIABLE TO CONFIGURE FRAMES TO SEARCH
    // (SELF OR CHILD FRAME)

    // If you want to search another frame, change from "self" to
    // the name of the target frame:
    // e.g., var frametosearch = 'main'

    //var frametosearch = 'main';
    var frametosearch = self;


    function search(whichform, whichframe) {

    // TEST FOR IE5 FOR MAC (NO DOCUMENTATION)

    if (is_ie4up && is_mac) return;

    // TEST FOR NAV 6 (NO DOCUMENTATION)

    if (is_gecko && (is_rev <1)) return;

    // TEST FOR Opera (NO DOCUMENTATION)

    if (is_opera) return;

    // INITIALIZATIONS FOR FIND-IN-PAGE SEARCHES

    if(whichform.findthis.value!=null && whichform.findthis.value!='') {

    str = whichform.findthis.value;
    win = whichframe;
    var frameval=false;
    if(win!=self)
    {

    frameval=true; // this will enable Nav7 to search child frame
    win = parent.frames[whichframe];

    }


    }

    else return; // i.e., no search string was entered

    var strFound;

    // NAVIGATOR 4 SPECIFIC CODE

    if(is_nav4 && (is_minor < 5)) {

    strFound=win.find(str); // case insensitive, forward search by default

    // There are 3 arguments available:
    // searchString: type string and it's the item to be searched
    // caseSensitive: boolean -- is search case sensitive?
    // backwards: boolean --should we also search backwards?
    // strFound=win.find(str, false, false) is the explicit
    // version of the above
    // The Mac version of Nav4 has wrapAround, but
    // cannot be specified in JS


    }

    // NAVIGATOR 7 and Mozilla rev 1+ SPECIFIC CODE (WILL NOT WORK WITH NAVIGATOR 6)

    if (is_gecko && (is_rev >= 1)) {

    if(frameval!=false) win.focus(); // force search in specified child frame
    strFound=win.find(str, false, false, true, false, frameval, false);

    // The following statement enables reversion of focus
    // back to the search box after each search event
    // allowing the user to press the ENTER key instead
    // of clicking the search button to continue search.
    // Note: tends to be buggy in Mozilla as of 1.3.1
    // (see www.mozilla.org) so is excluded from users
    // of that browser.

    if (is_not_moz) whichform.findthis.focus();

    // There are 7 arguments available:
    // searchString: type string and it's the item to be searched
    // caseSensitive: boolean -- is search case sensitive?
    // backwards: boolean --should we also search backwards?
    // wrapAround: boolean -- should we wrap the search?
    // wholeWord: boolean: should we search only for whole words
    // searchInFrames: boolean -- should we search in frames?
    // showDialog: boolean -- should we show the Find Dialog?


    }

    if (is_ie4up) {

    // EXPLORER-SPECIFIC CODE revised 5/21/03

    if (TRange!=null) {

    TestRange=win.document.body.createTextRange();



    if (dupeRange.inRange(TestRange)) {

    TRange.collapse(false);
    strFound=TRange.findText(str);
    if (strFound) {
    //the following line added by Mike and Susan Keenan, 7 June 2003
    win.document.body.scrollTop = win.document.body.scrollTop + TRange.offsetTop;
    TRange.select();
    }


    }

    else {

    TRange=win.document.body.createTextRange();
    TRange.collapse(false);
    strFound=TRange.findText(str);
    if (strFound) {
    //the following line added by Mike and Susan Keenan, 7 June 2003
    win.document.body.scrollTop = TRange.offsetTop;
    TRange.select();
    }



    }
    }

    if (TRange==null || strFound==0) {
    TRange=win.document.body.createTextRange();
    dupeRange = TRange.duplicate();
    strFound=TRange.findText(str);
    if (strFound) {
    //the following line added by Mike and Susan Keenan, 7 June 2003
    win.document.body.scrollTop = TRange.offsetTop;
    TRange.select();
    }


    }

    }

    if (!strFound) alert ("Il codice '"+str+"' non esiste") // string not found


    }
    // -->
    </script>

  2. #2
    Utente di HTML.it L'avatar di Diurno
    Registrato dal
    Nov 2004
    Messaggi
    217
    nessuno proprio?

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