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Thread: Null or not an object error

  1. #1
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    Default Null or not an object error

    I write online help and a customer has asked for a customised frameset template with search functionality available in a toolbar. The authoring software I use does part of the work for me, creating a file dhtml_search.js which includes an array containing all of the words used in the help and two functions to display a search field and another to display results in a right-hand frame.

    My problem is that I when a user clicks a search result, I want the topics text to display in the same frame as the results but it doesn't.

    I get an error that I can't fix.


    Page=new Array();Page[0]=new Array("The quick brown fox jumps over the lazy dog","4467.htm");
    var PageCount=1;

    function search(SearchWord){

    var The_form="";

    The_form='<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">\n';
    The_form+="<html>\n";
    The_form+="<head>\n";
    The_form+="<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>\n";
    The_form+="<title>Search Results</title>\n";
    The_form+='<script language="javascript" type="text/javascript" charset="UTF-8" src="dhtml_search.js"></script>\n';
    The_form+='<link rel="stylesheet" type="text/css" href="stylesheet.css">\n';
    The_form+="<style type='text/css'>\n";
    The_form+=".searchDetails {font-family:tahoma; background-color:white; font-size:7pt; font-weight:normal}\n";
    The_form+=".searchResults {font-family:tahoma; font-size:8pt}\n";
    The_form+="</style>\n";
    The_form+="</head>\n";
    The_form+="<body onload='javascript:document.SearchForm.SearchText. focus()'>\n";
    The_form+='<table class="searchDetails" border="0" cellspacing="0" cellpadding="2" width="100%">\n';
    The_form+='<tr><td></td></tr>';
    The_form+='<tr><td>';
    The_form+='<form name="SearchForm" action="javascript:show_results(document.SearchFor m.SearchText.value)">';
    The_form+='<input type="text" name="SearchText" size="25" value="' + SearchWord + '" />';
    The_form+='&nbsp;<input type="image" src="./search.gif" value="Submit" alt="Submit"/></form>'
    The_form+='</td></tr></table>\n';
    The_form+="</body></html>";


    this.status="";
    this.document.open();
    this.document.write(The_form);
    this.document.close();


    }

    function show_results(SearchWord) {
    var Result="";
    var NrRes=0;


    if(SearchWord.length>=1){
    while(SearchWord.indexOf("<")>-1 || SearchWord.indexOf(">")>-1 || SearchWord.indexOf('"')>-1){
    SearchWord=SearchWord.replace("<","&lt;").replace( ">","&gt;").replace('"',"&quot;");
    }
    }

    if(SearchWord.length>=1){
    SearchWord=SearchWord.toLowerCase();
    this.status="Searching, please wait...";
    Result+="<table border='0' cellpadding='5' class='searchResults' width='100%'>";
    for(j=0;j<PageCount;j++){
    k=Page[j].length-1;
    for(i=0;i<k;i++){
    WordPos=Page[j][i].toLowerCase().indexOf(SearchWord);
    if(WordPos>-1){
    FoundWord=Page[j][i].substr(WordPos,SearchWord.length);
    NrRes++;
    Result+="<tr><td>";
    Result+="<a href='"+Page[j][k]+"'>"+Page[j][k-1].replace(FoundWord,FoundWord.bold())+"</a><br/>\n";

    if(i<k-1){
    if(Page[j][i].length>350){
    Result+="..."+Page[j][i].substr(WordPos-100,200+FoundWord.length).replace(FoundWord,FoundW ord.bold())+"...\n";
    }
    else{
    Result+=Page[j][i].replace(FoundWord,FoundWord.bold())+"\n";
    }
    }
    Result+="</td></tr>";
    break;
    }
    }
    }
    Result+="</table>";
    Result+="<p class='searchDetails'>&nbsp;" + NrRes + " Resultat(en) gefunden.</p>";
    }

    var all_content = "<iframe name='BODY' id='myIframe' style='width:100%; height:100%' scrolling='auto' marginwidth='5' marginheight='0' frameborder='0'></iframe>";
    var myDiv = window.top.body_right;

    myDiv.innerHTML = all_content;

    var x=window.top.document.getElementById("myIframe");
    var y=x.contentDocument;
    y.BODY.innerHTML=Result;
    }


  2. #2
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    Default Re: Null or not an object error

    Please post your code using
    [ CODE ] <your code> [ /CODE ] or [highlight=java] <your code> [/highlight]

    There are small chances that one will bother reading quite a long code which is badly formatted. Is just an advice.

    application context
    Last edited by daniel.j2ee; December 13th, 2011 at 04:56 PM.

  3. #3
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    Default Re: Null or not an object error

    here is his code:

    Page=new Array();Page[0]=new Array("The quick brown fox jumps over the lazy dog","4467.htm");
    var PageCount=1;
     
    function search(SearchWord){
     
    var The_form="";
     
    The_form='<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">\n';
    The_form+="<html>\n";
    The_form+="<head>\n";
    The_form+="<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>\n";
    The_form+="<title>Search Results</title>\n";
    The_form+='<script language="javascript" type="text/javascript" charset="UTF-8" src="dhtml_search.js"></script>\n';
    The_form+='<link rel="stylesheet" type="text/css" href="stylesheet.css">\n';
    The_form+="<style type='text/css'>\n";
    The_form+=".searchDetails {font-family:tahoma; background-color:white; font-size:7pt; font-weight:normal}\n";
    The_form+=".searchResults {font-family:tahoma; font-size:8pt}\n";
    The_form+="</style>\n";
    The_form+="</head>\n";
    The_form+="<body onload='javascript:document.SearchForm.SearchText. focus()'>\n";
    The_form+='<table class="searchDetails" border="0" cellspacing="0" cellpadding="2" width="100%">\n';
    The_form+='<tr><td></td></tr>';
    The_form+='<tr><td>';
    The_form+='<form name="SearchForm" action="javascript:show_results(document.SearchFor m.SearchText.value)">';
    The_form+='<input type="text" name="SearchText" size="25" value="' + SearchWord + '" />';
    The_form+='&nbsp;<input type="image" src="./search.gif" value="Submit" alt="Submit"/></form>'
    The_form+='</td></tr></table>\n';
    The_form+="</body></html>";
     
     
    this.status="";
    this.document.open();
    this.document.write(The_form);
    this.document.close();
     
     
    }
     
    function show_results(SearchWord) {
    var Result="";
    var NrRes=0;
     
     
    if(SearchWord.length>=1){
    while(SearchWord.indexOf("<")>-1 || SearchWord.indexOf(">")>-1 || SearchWord.indexOf('"')>-1){
    SearchWord=SearchWord.replace("<","&lt;").replace( ">","&gt;").replace('"',"&quot;");
    }
    }
     
    if(SearchWord.length>=1){
    SearchWord=SearchWord.toLowerCase();
    this.status="Searching, please wait...";
    Result+="<table border='0' cellpadding='5' class='searchResults' width='100%'>";
    for(j=0;j<PageCount;j++){
    k=Page[j].length-1;
    for(i=0;i<k;i++){
    WordPos=Page[j][i].toLowerCase().indexOf(SearchWord);
    if(WordPos>-1){
    FoundWord=Page[j][i].substr(WordPos,SearchWord.length);
    NrRes++;
    Result+="<tr><td>";
    Result+="<a href='"+Page[j][k]+"'>"+Page[j][k-1].replace(FoundWord,FoundWord.bold())+"</a><br/>\n";
     
    if(i<k-1){
    if(Page[j][i].length>350){
    Result+="..."+Page[j][i].substr(WordPos-100,200+FoundWord.length).replace(FoundWord,FoundW ord.bold())+"...\n";
    }
    else{
    Result+=Page[j][i].replace(FoundWord,FoundWord.bold())+"\n";
    }
    }
    Result+="</td></tr>";
    break;
    }
    }
    }
    Result+="</table>";
    Result+="<p class='searchDetails'>&nbsp;" + NrRes + " Resultat(en) gefunden.</p>";
    }
     
    var all_content = "<iframe name='BODY' id='myIframe' style='width:100%; height:100%' scrolling='auto' marginwidth='5' marginheight='0' frameborder='0'></iframe>";
    var myDiv = window.top.body_right;
     
    myDiv.innerHTML = all_content;
     
    var x=window.top.document.getElementById("myIframe");
    var y=x.contentDocument;
    y.BODY.innerHTML=Result;
    }

    hmm is this even java? lol

  4. #4
    Administrator copeg's Avatar
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    Default Re: Null or not an object error

    javascript != java, and these are java forums. You might have better luck on a javascript dedicated forum.

  5. #5
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    Default Re: Null or not an object error

    In my defence, it is not my code. It is splurted out by the authoring software.

    Sorry for wasting your time.

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