JavaScript

Re: protecting javascript IP

4-Sep-10 4:16

Obfuscate the client side scripting.

Here is an example site for doing just that;
http://www.javascriptobfuscator.com/[^]

I ran some code through and here is the example input and output;

Java

// -------------------------------------------------
// Saves options to localStorage.
// -------------------------------------------------
function save_options() {

    //Get the current saved memberID
    var currentID = localStorage["memberID"];
    var newID = textMemberID.value;

    if (!(currentID == newID)) {
        //memberID has changed
        //Save the new memberID
        localStorage["memberID"] = newID;

        // Update status to let user know options were saved.
        if (localStorage["memberID"] == newID) {
            save_status.innerHTML = "MemberID: " + localStorage["memberID"] + " saved to local storage.";
            setTimeout(function () { save_status.innerHTML = ""; }, 1000);

            //Clear Saved Data
            var newRep = new Array();
            for (i = 0; i < 9; i++) {
                newRep[i] = "0";
            }

            //Update the stored Rep Data to 0 values
            setNewRepDetail(newRep);

            //Clear the table
            clearTable();

            //Reload the Page
            reload_Page();
        }
        else
        { save_status.innerHTML = "Error saving MemberID to localStorage."; }

    }
    else {
        save_status.innerHTML = "MemberID: has not changed.";
        setTimeout(function () { save_status.innerHTML = ""; }, 1000);
    }

}

Output;

Java

var _0x9c0d=["\x6D\x65\x6D\x62\x65\x72\x49\x44","\x76\x61\x6C\x75\x65","\x69\x6E\x6E\x65\x72\x48\x54\x4D\x4C","\x4D\x65\x6D\x62\x65\x72\x49\x44\x3A\x20","\x20\x73\x61\x76\x65\x64\x20\x74\x6F\x20\x6C\x6F\x63\x61\x6C\x20\x73\x74\x6F\x72\x61\x67\x65\x2E","","\x30","\x45\x72\x72\x6F\x72\x20\x73\x61\x76\x69\x6E\x67\x20\x4D\x65\x6D\x62\x65\x72\x49\x44\x20\x74\x6F\x20\x6C\x6F\x63\x61\x6C\x53\x74\x6F\x72\x61\x67\x65\x2E","\x4D\x65\x6D\x62\x65\x72\x49\x44\x3A\x20\x68\x61\x73\x20\x6E\x6F\x74\x20\x63\x68\x61\x6E\x67\x65\x64\x2E"];function save_options(){var _0xa035x2=localStorage[_0x9c0d[0]];var _0xa035x3=textMemberID[_0x9c0d[1]];if(!(_0xa035x2==_0xa035x3)){localStorage[_0x9c0d[0]]=_0xa035x3;if(localStorage[_0x9c0d[0]]==_0xa035x3){save_status[_0x9c0d[2]]=_0x9c0d[3]+localStorage[_0x9c0d[0]]+_0x9c0d[4];setTimeout(function (){save_status[_0x9c0d[2]]=_0x9c0d[5];} ,1000);var _0xa035x4= new Array();for(i=0;i<9;i++){_0xa035x4[i]=_0x9c0d[6];} ;setNewRepDetail(_0xa035x4);clearTable();reload_Page();} else {save_status[_0x9c0d[2]]=_0x9c0d[7];} ;} else {save_status[_0x9c0d[2]]=_0x9c0d[8];setTimeout(function (){save_status[_0x9c0d[2]]=_0x9c0d[5];} ,1000);} ;} ;

Dave

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NeverHeardOfMe4-Sep-10 5:47

Re: protecting javascript IP

4-Sep-10 5:47

Yeah - and anyone can go to sites such as this[^] , or google elsewhere, and de-obfuscate it again.

It might be good for compression purposes, but you'd be an idiot to try hiding aything really imprtant in it, and a fool if you think your IP will be protected because of it.

Short answer tot eh OP's question is: you can't, so don't bother. The longer one is: why do you want to, really? Is there anything in your code that is so mind-blowing, and hasn't been done before, that you just have to stop anyone else from seeing it? Or learning from it...

DaveAuld4-Sep-10 5:49

clearInterval Not working on IE

4-Sep-10 5:49

Obfuscation is only good for deterring the casual code browser. I totally accept that.

Dave

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greendragons3-Sep-10 3:46

3-Sep-10 3:46

Here is the code....it works fine on mozilla but on IE clearInterval doesn't work,,...

<br />
<html><br />
	<head><br />
		<style type="text/css"><br />
			.imgf{width:300px; height:250px;}<br />
			#img2{z-index:1000;}<br />
		</style><br />
		<script language="javascript"><br />
			window.onload=inItAll;<br />
			var j=0;<br />
			var N=2;<br />
			function inItAll()<br />
			{<br />
				document.getElementById("img1").onclick=click;<br />
			}<br />
			<br />
			function click()<br />
			{<br />
				if(navigator.appName=="Netscape")<br />
				{<br />
					j=0.9;<br />
					setInterval("fadeN()",40);<br />
					<br />
				}<br />
				else<br />
				{<br />
					 j=90;<br />
					 var fI = setInterval("fadeI()",40);<br />
				}<br />
				<br />
			}<br />
			<br />
			function fadeN()<br />
			{<br />
				j=j-0.1<br />
				<br />
				if(j>0.4)<br />
				{	<br />
					<br />
					document.getElementById("img1").style.opacity= j;<br />
				}<br />
				else<br />
				{<br />
					j=0.4;<br />
					window.clearInterval();<br />
					<br />
					document.getElementById("img1").src = "images/"+2+".jpg";<br />
					<br />
					setInterval("showN()",40);<br />
					<br />
				} <br />
				<br />
			}<br />
			<br />
			function showN()<br />
			{<br />
				<br />
				if(j<1)<br />
				{<br />
					document.getElementById("img1").style.opacity= j;<br />
					j=0.1 + j;<br />
					<br />
				}<br />
				else<br />
				{<br />
					window.clearInterval();<br />
					document.getElementById("img1").style.opacity= 1;<br />
					<br />
				}<br />
			}<br />
			<br />
			function fadeI()<br />
			{<br />
				j=j-10<br />
				<br />
				if(j>40)<br />
				{	<br />
					document.getElementById("img1").style.filter ="alpha(opacity="+j+")";<br />
					<br />
				}<br />
				else<br />
				{<br />
					j=40;<br />
					window.clearInterval(fI);<br />
					<br />
					document.getElementById("img1").src = "images/2.jpg";<br />
					<br />
					var sI = setInterval("showI()",40);<br />
				} <br />
				<br />
			}<br />
			<br />
			function showI()<br />
			{<br />
				<br />
				if(j<100)<br />
				{<br />
					document.getElementById("img1").style.filter ="alpha(opacity="+j+")";<br />
					j=10 + j;<br />
					<br />
				}<br />
				else<br />
				{<br />
					document.getElementById("img1").style.filter ="alpha(opacity="+100+")";<br />
					window.clearInterval(sI);<br />
					<br />
				}<br />
			}<br />
			<br />
		</script><br />
	</head><br />
	<body><br />
		<center><br />
			<br/><br />
			<br/><br />
			<div id="div1"><br />
				<img src="images/1.jpg" class="imgf" id="img1"/><br />
			</div>	<br />
		</center><br />
	</body><br />
</html><br />

it gives unwanted flicks on IE coz clearInterval did not work.....

Not Active3-Sep-10 4:11

3-Sep-10 4:11

Try using JQuery[^]. Cross platform and much less to write.

I know the language. I've read a book. - _Madmatt

greendragons3-Sep-10 4:16

3-Sep-10 4:16

I don't know anything about jquery......it's will take long to understand and implement that coz it's new technology for me...so plz can u help me with this in Javascript code....
Thnx...

phil.o3-Sep-10 4:23

phil.o

3-Sep-10 4:23

Mmmm... did you even try to click on the link Mark provided ? Because I'm not sure anyone is gonna help you here if, on your side, you're not able to give yourself a little effort.

Not Active3-Sep-10 4:27

3-Sep-10 4:27

<script src=jquery-1.4.2.min.js />

$("#img1).fadeIn();

This is too difficult for you? Roll eyes | :rolleyes:

I know the language. I've read a book. - _Madmatt

DaveAuld3-Sep-10 5:10

3-Sep-10 5:10

I used JQuery and JQueryUI in my last article, it was the first time i had even looked at JQuery, let alone actual go an implement it.

You should find it no problem at all, the basics are surprisingly simple.

Dave

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DaveAuld3-Sep-10 5:09

3-Sep-10 5:09

EDIT:

OOps, sorry Mark, replied to the wrong message!

ignore it.

Dave

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NeverHeardOfMe3-Sep-10 11:44

3-Sep-10 11:44

When you use setInterval you are supposed to set it to a variable, which becomes its ID, in effect - eg
instead of just writing

setInterval("showN()",40);

as you have, you should write

var IntervalID = setInterval("showN()",40);

Then, later when you want to clear it, you must refer to that ID:

clearInterval(intervalID);

Edit: screw jQuery. Never found a use for it yet. DIY, always.

Not Active3-Sep-10 17:11

3-Sep-10 17:11

NeverHeardOfMe wrote:
screw jQuery. Never found a use for it yet. DIY, always.

That's what we need, more people who refuse to learn and espouse the "always been done that way" dictum. Roll eyes | :rolleyes:

I know the language. I've read a book. - _Madmatt

NeverHeardOfMe3-Sep-10 22:29

3-Sep-10 22:29

Not at all - my "objection" to the likes of jQuery is precicely that it *stops* one from learning - it's just a box of magic tricks and turns you into a dancing dog. I prefer to try and learn how to do things myself.

Of course the reducto ad absurdum of this argument is that we should all go back to coding in machine language, and I am aware of that and the sillines of re-inventing the wheel. Nevertheless, I do feel there is a certian merit to my position - how often do we see questions asked here from people who have clearly learned a few "tricks" but have absolutely no real understanding of what they asking about?

Not Active4-Sep-10 3:44

4-Sep-10 3:44

JQuery is not a black box, you have the full source code available to actually research and learn. With .NET Reflector I'm often looking at Microsoft's code to see how something was done and learning.

You're argument is a bit weak but not worth the effort to drag out.

I know the language. I've read a book. - _Madmatt

greendragons4-Sep-10 22:44

4-Sep-10 22:44

I modified da code and put var ID... = setInterval(....)...,
but now it says da ID i gave is unidentified by browsers(both IE and Firefox).....

<br />
window.onload=inItAll;<br />
			var j=0;<br />
			var N=2;<br />
			function inItAll()<br />
			{<br />
				document.getElementById("img1").onclick=click;<br />
			}<br />
			<br />
			<br />
			function click()<br />
			{	<br />
					<br />
					if(navigator.appName=="Netscape")<br />
					{<br />
						j=0.9;<br />
						<br />
						var IntervalIDN1 = setInterval("fadeN()",40); //for firefox<br />
					<br />
						<br />
					}<br />
					else<br />
					{<br />
						 j=90;<br />
						 var IntervalIDI1 =  setInterval("fadeI()",40); //for IE<br />
					}<br />
				<br />
			}<br />
			<br />
			function fadeN()  //for Firefox<br />
			{<br />
				j=j-0.1<br />
				<br />
				if(j>0.4)<br />
				{	<br />
					<br />
					document.getElementById("img1").style.opacity= j;<br />
				}<br />
				else<br />
				{<br />
					j=0.4;<br />
					window.clearInterval(IntervalIDN1);<br />
					<br />
					document.getElementById("img1").src = "images/"+N+".jpg";<br />
					<br />
					var IntervalIDN2 = setInterval("showN()",40);<br />
					<br />
				} <br />
				<br />
			}<br />
			<br />
			function showN() //for firefox<br />
			{<br />
				<br />
				if(j<1)<br />
				{<br />
					document.getElementById("img1").style.opacity= j;<br />
					j=0.1 + j;<br />
					<br />
				}<br />
				else<br />
				{<br />
					window.clearInterval(IntervalIDN2);<br />
					document.getElementById("img1").style.opacity= 1;<br />
					<br />
				}<br />
			}<br />
			<br />
			function fadeI() //for IE<br />
			{<br />
				j=j-10<br />
				<br />
				if(j>40)<br />
				{	<br />
					document.getElementById("img1").style.filter ="alpha(opacity="+j+")";<br />
					<br />
				}<br />
				else<br />
				{<br />
					j=40;<br />
					window.clearInterval(IntervalIDI1);<br />
					<br />
					document.getElementById("img1").src = "images/2.jpg";<br />
					<br />
					var IntervalIDI2 = setInterval("showI()",40);<br />
				} <br />
				<br />
			}<br />
			<br />
			function showI()  //for IE<br />
			{<br />
				<br />
				if(j<100)<br />
				{<br />
					document.getElementById("img1").style.filter ="alpha(opacity="+j+")";<br />
					j=10 + j;<br />
					<br />
				}<br />
				else<br />
				{<br />
					document.getElementById("img1").style.filter ="alpha(opacity="+100+")";<br />
					window.clearInterval(IntervalIDI2);<br />
					<br />
				}<br />
			}<br />

if i remove ids it works perfectly on Firefox but not on IE....

NeverHeardOfMe4-Sep-10 23:30

4-Sep-10 23:30

well you need to define the var IntervalID outside of the functions (so that it is globally accessible to all), and then justs et it within

var IntervalID;
...
function XYZ () {
IntervalID = ...
}

greendragons4-Sep-10 23:56

onmouseorver for child element

4-Sep-10 23:56

Thnx a lot!!! REPS!! ++++++

can u plz look through

http://www.codeproject.com/Messages/3587075/onmouseorver-for-child-element.aspx[^]

greendragons3-Sep-10 2:13