Javascript variable issue

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Hello, i'm making a text adventure to try to learn javascript and im having problems with displaying integer values to my page. for example in the bellow code i want to display the users HP when you type attack. but nothing shows on the page. what am i doing wrong?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script src="scripts/jquery.js" type="text/javascript"></script>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>The Game!!</title>
</head>

<body>
<script>
var userHP = 500;

var hits = Math.floor(Math.random() * 100) - mobHP;

$(document).ready(function() {
$("#compass").fadeIn(3000);
$("#message_begin").fadeIn(3000);
$("#area_main").fadeIn(3000);
$("#command_line").fadeIn(3000);
$("form").submit(function() {
var input = $("#command_line").val();

//
//help
//
if (input.indexOf("help") > -1) {
if (input == "help") {
$("#message_help").clone().insertBefore("#placeholder").fadeIn(1000);
}
}
//
//end help
//
else if (input.indexOf("enter") > -1) {
if (input == "enter") {
$("#message_enter").clone().insertBefore("#placeholder").fadeIn(1000);
}
}
//
//end help
//
else if (input.indexOf("attack") > -1) {
if (input == "attack"){
$("#message_attack").clone().insertBefore("#placeholder").fadeIn(1000);

}}
</script>

<p id="message_attack"><script>userHP</script>you attack</p>

<form >
<input type="text" id="command_line" size="50" autofocus="autofocus" />
</form>

<script type="text/javascript" src="scripts/game.js"></script>

</body>

</html>

Posted 18-May-15 4:51am

Member 11699804

Updated 18-May-15 4:58am

v3

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Member 11699804 · Answer 1 · 2015-05-18T09:43:00

sorry just an error in me copying it across, it still doesn't display a value.

someone on another forum said the following:

Quote:

$(userHP - hits).insertBefore("#placeholder").fadeIn(1000);

That line is passing a number (userHP minus hits) to jQuery. I don't think jQuery does anything when you pass it a number. You would have to create a new element (a span, a div, etc) with the text that you want in it, and then you can pass that element to jQuery.

no really sure what he means by this though