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Please help me with another thing....

NickBomb
06-13-2007, 10:27 AM
I need help with another code...

This is my HTML:


<html>
<head>
<script language="JavaScript">
var exp = 0;
var lvl = 1;
var monsterhp = 0;

function letamonster() {
// random
var r=Math.random()
if (r<0.1) // 1
{
var monsternamn = "Råtta"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 10
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (r>0.1 && r<0.3) //2
{
var monsternamn = "Padda"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 7
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (r>0.2 && r<0.4) //3
{
var monsternamn = "Groda"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 5
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (r>0.3 && r<0.5) //4
{
var monsternamn = "Vägg"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 100
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (r>0.4 && r<0.6) //5
{
var monsternamn = "Gris"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 14
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (r>0.5 && r<0.7) //6
{
var monsternamn = "Noshörning"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 55
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (r>0.6 && r<0.8) //7
{
var monsternamn = "Älg"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 43
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (r>0.7 && r<0.9) //8
{
var monsternamn = "Fågel"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 10
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (r>0.8) // 9
{
var monsternamn = "Mask"
document.getElementById('txtmonsternamn').value=monsternamn;
var monsterhp = 1
document.getElementById('txtmonsterhp').value=monsterhp;
}
document.getElementById('letafiender').disabled=true;
}


function anfall() {
// random
var a=Math.random()
if (a<0.1) // 1
{
var monsterhp = monsterhp - 2
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (a>0.1 && a<0.3) //2
{
var monsterhp = monsterhp - 1
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (a>0.2 && a<0.4) //3
{
var monsterhp = monsterhp - 5
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (a>0.3 && a<0.5) //4
{
var monsterhp = monsterhp - 3
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (a>0.4 && a<0.6) //5
{
var monsterhp = monsterhp - 4
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (a>0.5 && a<0.7) //6
{
var monsterhp = monsterhp - 7
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (a>0.6 && a<0.8) //7
{
var monsterhp = monsterhp - 4
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (a>0.7 && a<0.9) //8
{
var monsterhp = monsterhp - 1
document.getElementById('txtmonsterhp').value=monsterhp;
}
else if (a>0.8) // 9
{
var monsterhp = monsterhp - 10
document.getElementById('txtmonsterhp').value=monsterhp;
}
if (monsterhp < 0)
{
alert('du vann!')
}
}

function getexp() {
exp = exp + 5;
document.getElementById('txtexp').value=exp;
if (exp === 20) {
alert('lvl up!');
exp = 0;
document.getElementById('txtexp').value=exp;
}
}

</script>

<TITLE>
JavaScript test
</TITLE>
</head>
<body>
<table>
<tr>
<td>HP:<input type="text" id="txthp" name="txthp" value="10" size="2" readonly></td>

<td>EXP:<input type="text" id="txtexp" name="txtexp" value="0" size="2" readonly></td>

/* <td>$:<input type="text" id="txtgp" name="txtgp" value="0" size="2" readonly></td> */

</tr>
</table>


<input type="button" name="letafiender" id="letafiender" value="Leta fiender!" onclick="letamonster()">
<BR>
<table><tr>
<td>
Monstrets namn: <input type="text" name="txtmonsternamn" id="txtmonsternamn" value="" size="30" readonly>
</td>
<td>Monstrets HP: <input type="text" name="txtmonsterhp" id="txtmonsterhp" value="" size="3" readonly>
</td>
</tr>
<tr><td><input type="button" name="anfall" id="anfall" value="Anfall!" onclick="anfall()"></table>
</body>
</html>



What it shall do is the following:
First, when you click the button "Leta monster", it should come up a random monster name in the textbox "monstrets namn", and a HP value should come up in the textbox "monstrets HP".
Then the button is disabled, because you have to fight that monster, not go searching for another one.

This far all is well, here is my problem:
When you click the button "anfall", the monster should be hurt with a random damage number.
But, when I click the "anfall"-button, the monster's HP goes "NaN".

Please, can you help me and tell me what's wrong?
Philip M
06-13-2007, 10:53 AM
Your problem is here:-

var monsterhp = monsterhp - 2

var declares a new variable. You have already declared
var monsterhp = 0;

Delete the var before all instances of monsterhp.

Also best to declare monsternamn at the ouset as
var monsternamn = "";
and then delete the var in all the instances of
var monsternamn = "Padda" etc.

Is the player supposed to attack the monster repeatedly? I have just reduced Gris to -57 hit points by bashing him/her/it repeatedly!
NickBomb
06-13-2007, 11:07 AM
Thanks for the help!
I did'nt know "var" just declared a variable, I thought you should use it all the time :)

And for your question, I have not had time to make that yet, so it attacks back :P
Philip M
06-13-2007, 11:23 AM
Just noticed a detail:-

var a=Math.random()
if (a<0.1)
Change to (in case a evaluates to exactly 0.1)

var a=Math.random();
if (a<=0.1) {

Same for var r=math.random;
if (r<=0.1) {

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