JavaScript

Tobster · 05-31-2007

Hi

I kind of hitting Desperation point and really need a volenteer to help me out. Apart of my Open Uni course is about JavaScript and I am having problems getting my head around it...

If there anyone out there willing to help me learn it I would be VERY grateful and it will mean the differents between passing and failing.

If you willing to help me just click on reply.

Thanks

Toby

lakersforce · 05-31-2007

Why don't you descripe your problem...?

Tobster · 05-31-2007

Hi

I was not expecting such a speedy response, which is very cool. What it 11.45pm now in the UK and I got to get up at 4am for work so I will add to this tomorrow if that o.k with you?

Alternatively you could e-mail me at toby.whaymand@ntlworld.com

Thanks

Toby

brandx · 05-31-2007

Sounds good toby, hopefully we can help out when you get a chance to post more details.

Extreme Coder · 05-31-2007

Yeah, I once tried out JavaScript, not a bad language at all. Waiting to see what your problem is

lakersforce · 06-01-2007

I recieved the following PM from Tobster:

I got to fix the following programme and say what the errors are:

<HTML>
<HEAD> M 150 TMAO3 Question 1 (i)
<TITLE>Enter a number </TITLE>
<SCRIPT language="JavaScript" >
var userInput;
var userNumber;
var upperLimit = 20;
userInput = window.prompt('Please enter a number in
the range 1 to ' + upperLimit,'');
userNumber = parseFloat(userInput);
while ((userNumber <= 1) || (userNumber >=
upperLimit))
{
UserInput = window.prompt('Please re-enter - number
should be in range 1 to + upperLimit, '')
}
document.write('<BR>'+'Your chosen number was ' +
yourNumber)
</SCRIPT>
</HEAD>
<BODY>
</BODY>
</HTML>

If could help me out I would be very greatful it will also help me learn.

This does mean a lot to me so thanks

Toby

lakersforce · 06-01-2007

I can see a syntax error right here:

userInput = window.prompt('Please enter a number in
the range 1 to ' + upperLimit,'');

should be:

userInput = window.prompt('Please enter a number in
the range 1 to ' + upperLimit,');

lakersforce · 06-02-2007

Allow me to BUMP this post....or TTT if you prefer

qtwerp · 06-02-2007

Note: Blue indicates additions, green comments, red possible removals, and red italic removals

<SCRIPT language="JavaScript" >
var userInput;
var userNumber;
var upperLimit = 20;
userInput = window.prompt('Please enter a number in' +
//You need to terminate the string and use the + sign to concatenate the two strings if you're going to go to multiple lines
'the range 1 to ' + upperLimit,'');
userNumber = parseFloat(userInput);
//Need the ' to say it's a string and the default value is optional. Since you don't have anything useful in there, you might as well leave it out
while ((userNumber <= 1) || (userNumber >=
upperLimit))
{
UserInput = window.prompt('Please re-enter - number' +
'should be in range 1 to' + upperLimit, '');
//Again terminate the string on the first line and use the + to concatenate. The text on the second line is not as a string so put the single quotes around it. Still nothing useful for the second part. Again, since it's optional, you can leave it out.
//You also forget to check for valid input. If the user inputs invalid information the first time, they'll be stuck in an infinite loop. You need code here to fix that.
}
document.write('<BR>'+'Your chosen number was ' +
//Why make that two strings? It's not necessary.
yourNumberuserNumber);
//yourNumber? It's been userNumber throughout the script
</SCRIPT>

It seems your biggest problem is just making a string cover multiple lines. You can always put each string on one line to avoid problems.

Tobster · 06-04-2007

Thanks everyone it means alot to me

05-31-2007	#1 (permalink)
Tobster Just getting started Join Date: May 2007 Posts: 6	JavaScript Hi I kind of hitting Desperation point and really need a volenteer to help me out. Apart of my Open Uni course is about JavaScript and I am having problems getting my head around it... If there anyone out there willing to help me learn it I would be VERY grateful and it will mean the differents between passing and failing. If you willing to help me just click on reply. Thanks Toby

05-31-2007	#2 (permalink)
lakersforce Drank to much Mountain Dew Join Date: May 2007 Location: Odense, dk Posts: 391	Re: JavaScript Why don't you descripe your problem...?

05-31-2007	#3 (permalink)
Tobster Just getting started Join Date: May 2007 Posts: 6	Re: JavaScript Hi I was not expecting such a speedy response, which is very cool. What it 11.45pm now in the UK and I got to get up at 4am for work so I will add to this tomorrow if that o.k with you? Alternatively you could e-mail me at toby.whaymand@ntlworld.com Thanks Toby

05-31-2007	#4 (permalink)
brandx Eligible for a custom title Join Date: May 2007 Location: Michigan, USA Posts: 485	Re: JavaScript Sounds good toby, hopefully we can help out when you get a chance to post more details.
	My blog Formerly - ubuntu-geek

05-31-2007	#5 (permalink)
Extreme Coder ^_^; Join Date: May 2007 Location: Cairo,Egypt Posts: 1,203	Re: JavaScript Yeah, I once tried out JavaScript, not a bad language at all. Waiting to see what your problem is

06-01-2007	#6 (permalink)
lakersforce Drank to much Mountain Dew Join Date: May 2007 Location: Odense, dk Posts: 391	Re: JavaScript I recieved the following PM from Tobster: I got to fix the following programme and say what the errors are: <HTML> <HEAD> M 150 TMAO3 Question 1 (i) <TITLE>Enter a number </TITLE> <SCRIPT language="JavaScript" > var userInput; var userNumber; var upperLimit = 20; userInput = window.prompt('Please enter a number in the range 1 to ' + upperLimit,''); userNumber = parseFloat(userInput); while ((userNumber <= 1) \|\| (userNumber >= upperLimit)) { UserInput = window.prompt('Please re-enter - number should be in range 1 to + upperLimit, '') } document.write('<BR>'+'Your chosen number was ' + yourNumber) </SCRIPT> </HEAD> <BODY> </BODY> </HTML> If could help me out I would be very greatful it will also help me learn. This does mean a lot to me so thanks Toby

06-01-2007	#7 (permalink)
lakersforce Drank to much Mountain Dew Join Date: May 2007 Location: Odense, dk Posts: 391	Re: JavaScript I can see a syntax error right here: userInput = window.prompt('Please enter a number in the range 1 to ' + upperLimit,''); should be: userInput = window.prompt('Please enter a number in the range 1 to ' + upperLimit,');

06-02-2007	#8 (permalink)
lakersforce Drank to much Mountain Dew Join Date: May 2007 Location: Odense, dk Posts: 391	Re: JavaScript Allow me to BUMP this post....or TTT if you prefer

06-02-2007	#9 (permalink)
qtwerp Retired User Join Date: May 2007 Posts: 372	Re: JavaScript Note: Blue indicates additions, green comments, red possible removals, and red italic removals <SCRIPT language="JavaScript" > var userInput; var userNumber; var upperLimit = 20; userInput = window.prompt('Please enter a number in' + //You need to terminate the string and use the + sign to concatenate the two strings if you're going to go to multiple lines 'the range 1 to ' + upperLimit,''); userNumber = parseFloat(userInput); //Need the ' to say it's a string and the default value is optional. Since you don't have anything useful in there, you might as well leave it out while ((userNumber <= 1) \|\| (userNumber >= upperLimit)) { UserInput = window.prompt('Please re-enter - number' + 'should be in range 1 to' + upperLimit, ''); //Again terminate the string on the first line and use the + to concatenate. The text on the second line is not as a string so put the single quotes around it. Still nothing useful for the second part. Again, since it's optional, you can leave it out. //You also forget to check for valid input. If the user inputs invalid information the first time, they'll be stuck in an infinite loop. You need code here to fix that. } document.write('<BR>'+'Your chosen number was ' + //Why make that two strings? It's not necessary. yourNumberuserNumber); //yourNumber? It's been userNumber throughout the script </SCRIPT> It seems your biggest problem is just making a string cover multiple lines. You can always put each string on one line to avoid problems. Last edited by qtwerp : 06-02-2007 at 04:54 PM. Reason: cleanup
qtwerp Retired User Join Date: May 2007 Posts: 372

06-04-2007	#10 (permalink)
Tobster Just getting started Join Date: May 2007 Posts: 6	Re: JavaScript Thanks everyone it means alot to me