hisoka
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and
what represent these additional hex values after 50 4B 05 06
00 00 00 00 02 00 02 00 6F 00 00 00 84 09 00 00 00 00 ??
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Hello glad to be again in w3schools forum
when I opened a zip file in hex editor , I noticed that after the end of the file , there are additional hex values . For example in a zip file I opened in a hex editor there was like this :
50 4B 05 06 00 00 00 00 02 00 02 00 6F 00 00 00 84 09 00 00 00 00
50 4B 05 06 hex values represent the end of the zip file . However , I do not understand what represent these additional hex values after the end
00 00 00 00 02 00 02 00 6F 00 00 00 84 09 00 00 00 00 ??
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Could you please tell me how does exactly a missile launch code work ?
I have a website here which is of course fake
https://whitehouse.gov1.info/launch/launch.html
and I saw codes like this :
pyHAvqTp3Mxye8vscUGr+92wvuhK6eyL9QBseQ4gsX3Fcnr2xO 9cMJHoSdEv98hVymwhLsOgLzigJHPTfxA0Ani7EWNaZx1hLaRm pyHAv2KZ9gRLgLtwb4spOh0Xb1cFjsZ3tcbo6CnuUT+wOy74p7 mQINBE+UYy0BEADeUhQF1JVfDU9/OAvWD3FajAyQPjAeiOoVRfukM0L8qFQCieCN pyHAvqTp3Mxye8vscUGr+92wvuhK6eyL9QBseQ4gsX3Fcnr2xO 9cMJHoSdEv98hVymwhLsOgLzigJHPTfxA0Ani7EWNaZx1hLaRm pyHAv2KZ9gRLgLtwb4spOh0Xb1cFjsZ3tcbo6CnuUT+wOy74p7 mQINBE+UYy0
how does the whole process work?
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var x = document.anchors ; for ( var i = 0 ; i < 5 ; i++) { console.log(x[i]); }gives
undefinedas a result
and even
var x = document.anchors ; for ( var i = 0 ; i < 5 ; i++) { alert(x[i]); }gives
undefined
I do not know how to get the result . Any help
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finding HTML objects :
document.anchors
I would like to enumerate the first 5 <a> elements using for loop but I failed :
var x = document.anchors ; for ( var i = 0 ; i<=5 ; i++) { console.log(x);}This what I got
HTMLCollection [ ] HTMLCollection [ ] HTMLCollection [ ] HTMLCollection [ ] HTMLCollection [ ]
I would like to get the first 5 elements . Any hint ?
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Now to understand :
document.getElementById(id).onclick = function(){code}I wrote this :
<html> <body> <p id="here">w3schools.invisionzone.com</p> <script> function change() { var x = document.getElementById('here'); x.style.color = "red"; } </script> <form> <button type="button" onclick="change()" >Click Me!</button> </form> </body> </html> -
The node you found is not a child node of the body's parent.
So I did like this to get the parent of the child element :
var b = document.getElementsByTagName('a')[2] ; var x = b.parentNode ; console.log(x);and I got :
<div style="float:left;width:50%;overflow:hidden;height:44px">
then did like this :
x.removeChild(
and it was removed
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An easy way to do that is to do element.parentNode.removeChild(element).
For example in this script :
<body> <div class='w3-container top'> <a class='w3schools-logo' href='http://www.w3schools.com'>w3schools<span class='dotcom'>.com</span></a> <div class='w3-right toptext w3-wide'>THE WORLD'S LARGEST WEB DEVELOPER SITE</div></div> <div class='w3-navbar w3-card-2 w3-slim topnav' id='topnav'> <div style='overflow:auto;'> <div style='float:left;width:50%;overflow:hidden;height:44px'> <a href='javascript:void(0);' class='topnav-localicons w3-hide-large w3-left' onclick='open_menu()' title='Menu'>☰</a> <a href='/default.asp' class='topnav-icons fa fa-home w3-left' title='Home'></a> <a href='/html/default.asp' class='w3-hide-small' title='HTML Tutorial'>HTML</a><a href='/css/default.asp' class='w3-hide-small' title='CSS Tutorial'>CSS</a><a href='/js/default.asp' class='w3-hide-small' title='JavaScript Tutorial'>JAVASCRIPT</a><a href='/sql/default.asp' class='w3-hide-small' title='SQL Tutorial'>SQL</a><a href='/php/default.asp' class='w3-hide-small' title='PHP Tutorial'>PHP</a><a href='/bootstrap/default.asp' class='w3-hide-small' title='Bootstrap Tutorial'>BOOTSTRAP</a><a href='/jquery/default.asp' class='w3-hide-small' title='jQuery Tutorial'>JQUERY</a><a href='/angular/default.asp' class='w3-hide-small' title='Angular Tutorial'>ANGULAR</a><a href='/xml/default.asp' class='w3-hide-small' title='XML Tutorial'>XML</a></div> <div style='float:right;width:110px;overflow:hidden;height:44px;'> <a href='javascript:void(0);' class='topnav-icons fa fa-search w3-right' onclick='w3_open_nav("search")' title='Search W3Schools'></a> <a href='javascript:void(0);' class='topnav-icons fa fa-globe w3-right' onclick='openGoogleTranslate();w3_open_nav("translate")' title='Translate W3Schools'></a></div> <div class='w3-hide-small' style='float:right;width:30%;overflow:hidden;height:44px;'> <a id='topnavbtn_tutorials' href='javascript:void(0);' onclick='w3_open_nav("tutorials")' title='Tutorials'>TUTORIALS <i class='fa fa-caret-down'></i><i class='fa fa-caret-up' style='display:none'></i></a><a id='topnavbtn_references' href='javascript:void(0);' onclick='w3_open_nav("references")' title='References'>REFERENCES <i class='fa fa-caret-down'></i><i class='fa fa-caret-up' style='display:none'></i></a><a id='topnavbtn_examples' href='javascript:void(0);' onclick='w3_open_nav("examples")' title='Examples'>EXAMPLES <i class='fa fa-caret-down'></i><i class='fa fa-caret-up' style='display:none'></i></a><a href='/forum/default.asp'>FORUM</a></div></div> <div id='nav_tutorials' class='w3-dropnav w3-light-grey w3-card-2 w3-center'></div> <div id='nav_references' class='w3-dropnav w3-light-grey w3-card-2 w3-center'></div> <div id='nav_examples' class='w3-dropnav w3-light-grey w3-card-2 w3-center'></div> <div id='nav_translate' class='w3-dropnav w3-light-grey w3-card-2 w3-center'></div> <div id='nav_search' class='w3-dropnav w3-light-grey w3-card-2 w3-center'></div></div> <div class='w3-row w3-light-grey' id='belowtopnav'> <div class='w3-col w3-slim' id='leftmenu'> <div id='leftmenuinner'> <div class='w3-light-grey' id='leftmenuinnerinner'>
how to delete this element :
<a href='/default.asp' class='topnav-icons fa fa-home w3-left' title='Home'></a>
var b = document.getElementsByTagName('a')[2] ;and we know that it is the child of
<body>
so I did like this :
var b = document.getElementsByTagName('a')[2] ; document.body.parentElement.removeChild(but I got an error :
NotFoundError: Node was not found
However if we look in html script above we will notice that body node exists so why it says node not found ? and how to correct again the error
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So an interface is the methods and properties of an object ??
Look Justsomeguy I am an idiot . The whole time the word interface was explained here in simple words
http://www.w3schools.com/js/js_htmldom_methods.asp
The programming interface is the properties and methods of each objectBut because I did not open my eyes and give some efforts to read . I did not notice it
Now I would like to know what is a node . So , first , I tried to reread all the pages I already read so that I did not miss the definition of the word node in w3schools tutorial but I could not find the definition as I did with the word interface . However I found this interesting tree :
So I think that each element is a node of the tree . title is a node , href is a node and body is a node... . Right ? or wrong ?
In the same time , head element is a child of the parent html element and body element is the child of the parent html element . Title element is the child of head element which is its parent . and html element is the grandfather of the title element Right or wrong ?
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ok now coming to
document.removeChild(element)
I did like this :
var b = document.getElementsByTagName('a')[7]; document.removeChild(but there was an error saying
NotFoundError: Node was not foundwhat is the meaning of the error ? and how to correct it ?
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So an interface is the methods and properties of an object ??
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Thank you for the link . The blueprint of an object or the object interface is nothing more than its methods and properties . Right ? or wrong ?
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To understand better I will write that in java script a variable is an object . So
var name = "john";
is an object with value john . Could you please give me the blueprint of the variable name ?
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Literary , I know what a blueprint means but programmatically not . For example this is an object :
<div id="headerSubnav">
what is its blueprint ? please write me its blueprint so that I know how does the blueprint of the object
<div id="headerSubnav">
look like
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ok so let's say that what you mean is these three links :
https://en.wikibooks.org/wiki/Introduction_to_Programming_Languages/Parsing
http://whatis.techtarget.com/definition/parse
http://nathansuniversity.com/pegs.htmlin the last link it written :
Parsing is the general problem of turning raw text into structured data. In the case of parsing programming languages, parsing converts the text the programmer writes into an abstract syntax tree
what is the need to turn a program written by a programmer into structured data before being compiled ? Why we do not compile the program directly ?
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So the data read to a log file is parsed or broken up so that when we open the log file to see what is inside it , it looks like this :
May 8 11:22:23 server5 pure-ftpd: (?@120.76.103.188) [INFO] New connection from 120.76.103.188 May 8 11:22:27 server5 pure-ftpd: (?@120.76.103.188) [WARNING] Authentication failed for user [anonymous] May 8 11:22:28 server5 pure-ftpd: (?@120.76.103.188) [INFO] Logout. May 8 11:22:28 server5 pure-ftpd: (?@120.76.103.188) [INFO] New connection from 120.76.103.188 May 8 11:22:33 server5 pure-ftpd: (?@120.76.103.188) [WARNING] Authentication failed for user [ruralmetro] May 8 11:22:34 server5 pure-ftpd: (?@120.76.103.188) [INFO] Logout. May 8 11:23:05 server5 pure-ftpd: (?@120.76.103.188) [INFO] New connection from 120.76.103.188 May 8 11:23:14 server5 pure-ftpd: (?@120.76.103.188) [WARNING] Authentication failed for user [onlinelearning] May 8 11:23:14 server5 pure-ftpd: (?@120.76.103.188) [INFO] Logout.
well organized , in order and clear . Right or wrong ?
Parsing is done in the same time with reading or before ? I mean data are parsed then read to log file or parsed meanwhile it is being read ?
What happens if data is not parsed and read to a log file ? what happens if it is being read without being parsed ?
it will look like this :
èÇ R…Àt*ÇD$7`Dn‰$èº ƒì…Àt Ç$ÄRDnÿÐÉø 맸 ëâU‰åƒìÇ$ `Dnè~ Q…Àt%ÇD$K`Dn‰$èq ƒì…Àt Ç$ àDnÿÐÉÃv ¸ ëç ƒ|$u ¸€`DnÃv 1Àö ¼' ¸€`DnÃ|$u ¸ aDnÃv 1Àö ¼' UWVSƒì|‹¬$ Ç$ èv ‰D$LÇD$ ÇD$ ÇD$ D$L‰$è¾ èÁ Ç$ è S‹•Ð ‰T$4…Ò„š ÿE‰,$è¿$ öÄ0„ ‰,$è®$ öÄ@… ‹˜ …É„Ö Ç$ è[ R‹]4ûA ië û@ ŒÔ „¾ ‰,$è†^ …ÀŽO ÇED ‹}l…ÿ„l ÇE4B ¾B ‹L$4…Éu`´& ‰óûA ~¦ûa Ê û` Œ® „¸ ‰,$è ^ …ÀŽé ÇED ÇE4 ¾ t& ‹L$4…Ét¨9Þt¤‰]4ÇD$ ÇD$ ‰,$‹T$4ÿÒ‰u4‰ó냉,$èèÓ éîþÿÿv û Ä û ŒH ÇE0 „Ë ‹E<‹pû „Ð ‹UT‹‚ Bd‹’ | ÿÿ? ‡ ‹ED‰ú)‰T$ð‰D$‰,$‰T$0èšV ‹T$09Â…® ‹Ed…Àt+‹Uh‰T$‰l$‰|$‰t$ÇD$ ‹U ‰T$Ç$ ÿÐƒÆ ‰t$8‹UT‹‚ …À… ÇD$ ‰,$è´I …À„£ ‹El…À„Ñ ‹UT‹L$8Š Š ‹Bdƒø ‡ zh‰ÎƒøƒT 1Ò¨tf‹f‰º ¨tŠˆÇED ÇE4 ¾ éqþÿÿû€ „$ ^ ƒßÿÿƒø‡ï ‹…È ¨„© ‹•À ‹²œ …öt¨…‘ ‹}T—ð ‰T$8ûp „“ ûq „ ûr „° ‹E<‹p‹‡ ‡ xÿÿ? †
??
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I will try my best man .
That's what I described in post 32, the interface as a blueprint for an object.What does blueprint of an object mean ?
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No. Parsing is reading, not writing.
First thank you for correcting me . Parsing is reading and by reading it is meant like in this URL :
http://www.webopedia.com/TERM/R/read.html
Copying data to a file or storing data in a file lets say log file . So the answer to my question . what does parse a log file mean
storing data in a well formatted and clear way . I am right or wrong ?
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Don't ask me to simplify, if you have trouble understanding then look up words in the dictionary and look up concepts on Wikipedia.
if dictionaries and articles helped me I would not create an account in http://w3schools.invisionzone.com and I would not ask for help . Things should be clear 100% in my mind otherwise I am not satisfied . I did not learn programming and computer science , at university , like most of you did because I did not get the opportunity because I got a very hard circumstances in my life ( let not talk about it ) if I studied it at university or got even friends who can help me in real life I would not have been here . Either you take me like I am an ignorant newbie who is in the beginning of the path or you no need to answer my question . You answered many questions and I understood very well but . I cannot pretend to understand if I did not . I am like that . So please be patient with me or let me down . I did not understand means I did not understand . Sorry man
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Sorry I will specify my question : here :
is mentioned the word interface and I would like to know what does it mean ?
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Where did you read about parsing log files?
From my imagination , I put parsing log file in the search box in google . I did not read it any where really
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So based on the example you gave me , by parsing a log file you mean writing data to a a log file and separating or arranging it in a way that it is clearly understandable and good organized ? is this what you mean Justsomeguy ? and consequently what is meant by parsing a log file ?
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what does this mean
Attr object??
In the context of the DOM, an attribute is a "property" of an elementand what is an attribute in JavaScript context ?
I still do not understand what is an interface . Could you explain further ?
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You can't imagine a situation where that might be useful?
It is not that I cannot imagine the situation . The situation is not well understood to me .
Perhaps we can find out the intentions behind it if you tell us where you read about parsing log files.I did not read it anywhere . I am writing in general .
there are a multitude of possible reasonsGenerally speaking , could you please enumerate them ? What are the reasons of interpreting or parsing a log file?
additional hex values after the end of the zip file
in General
Posted
I already did . However I still do not understand what are the additional hex values after 50 4B 05 06