Hide JavaScript code from Internet Explorer and Firefox

Question

I wrote the following code:

<script type='text/javascript'>
    var imageID = 0;
    function changeimage(every_seconds) {

        //Change the image
        if (!imageID) {
            document.getElementById("myimage").src = "jesus.jpg";
            imageID++;
        } else { if(imageID==1) {
            document.getElementById("myimage").src="crucifixion.jpg";
            imageID++;
        } else { if(imageID==2) {
            document.getElementById("myimage").src="resurrection.jpg";
            imageID++;
        } else { if(imageID==3) {
            document.getElementById("myimage").src="trinity.jpg";
            imageID=0;
        }}}}

        //Call the same function again for x number of seconds
        setTimeout("changeimage("+every_seconds+")",((every_seconds)*1000));
    }

    var k=0;

    <!--[if gte IE, FF]><!-->

    var k=1;

    <!--><![endif]-->

    function mytext1() {
        if (k==1) {
            document.getElementById("mylink").href="king.html";
            document.getElementById("mytext").innerHTML="THE KING OF KINGS";
        } else { if(k==2) {
            document.getElementById("mylink").href="crucifixion.html";
            document.getElementById("mytext").innerHTML="HE WAS PUNISHED FOR OUR SINS";
        } else{ if(k==3) {
            document.getElementById("mylink").href="resurrection.html";
            document.getElementById("mytext").innerHTML="HE WON DEATH";
        } else { if(k==4) {
            document.getElementById("mylink").href="trinity.html";
            document.getElementById("mytext").innerHTML="THE HOLY TRINITY";
            k=0;
        }}}}
        k++;
    }
</script>

For the program to work in all browsers, the k must be equal to 1 in Chrome and 0 in Internet Explorer and Firefox.

How do I hide K=1; from Internet Explorer and Firefox?

*"For the program to work in all browsers the k must be equal to 1 in Chrome and 0 in Internet Explorer and Firefox."* Why? What makes you think that? — T.J. Crowder, Apr 13 '13 at 22:17
Separately: You may find this useful: [The `switch` statement](http://www.ecma-international.org/ecma-262/5.1/#sec-12.11). — T.J. Crowder, Apr 13 '13 at 22:19
Ho i get it now, }}}}}}}}}... at the bottom, totally readable... You might want to learn using switch() — Virus721, Apr 13 '13 at 22:24
} else if (x == y) { would be a good start too. Oh, conditional comments in JS ?? Btw only ie lt 10 supports them so FF in there is made up syntax. — Robert Hoffmann, Apr 14 '13 at 09:41

score 0 · Answer 1 · edited May 23 '17 at 11:57

0

To detect Internet Explorer, you can use navigator.appName property:

if (navigator.appName == 'Microsoft Internet Explorer') k = 1;

To detect Chrome, you can use

if (window.chrome) k = 0;

To detect Firefox, I suggest to use navigator.userAgent property

if (navigator.userAgent.toLowerCase().indexOf('firefox') > -1) k = 1;

Hide JavaScript code from Internet Explorer and Firefox

1 Answers1