随机没有右键单击消息不起作用

Question

So we all know that you cannot truly protect your images once you post them, but its a bit of fun to tease the lay person. I added a script to prevent right-clicking and was trying to randomize funny messages... its not working.

the script:

// BACKGROUND IMAGES
try {
  document.execCommand("BackgroundImageCache", false, true);
} catch(err) {}



// no right click
var message=["That doesn't belong to you!  Put the mouse down and no one gets hurt!";
             "Oh, you again.  We of the internet have chosen to defy you!";
         "How would you like it if I walked into your house and tried to help myself to     your furniture?";
         "Hey that tickles!"
         "Thief!  You are being directed to the...  nah just kidding. Enjoy!"]


function clickIE4(){
    if (event.button==2){
        alert(message);
        return false;
    }
}

function clickNS4(e){
    if (document.layers||document.getElementById&&!document.all){
        if (e.which==2||e.which==3){
            alert(message);
            return false;
        }
    }
}

if (document.layers){
    document.captureEvents(Event.MOUSEDOWN);
    document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById){
    document.onmousedown=clickIE4;
}

document.oncontextmenu=new Function("alert(message);return false")

What am I forgetting? It looks like it should work. when I remove the [ and ] and reduce it to one message, that message works just fine. Its when I add additional and attempt to randomize it that the issues occur.

Answer 1

You are alerting the whole array.
If you want to have random message you could do something like:

 var rn = Math.floor(Math.random() * message.length);
 alert(message[rn]);

This generates a random number out of the number of messages you have in the array.

Math.random
Math.floor