Passing a URL as a parameter does not appear to work

[Email.IainWilson]

Hi All

Very new to web page design here. Week 1 in fact.

I have a javascript function that is called in an OnClick event for a
button.
I am attempting to get the function to open a web page in a new window
in response to a button click.

I can get the page to open if I use the following syntax (hard code the
address)

var newwin =
indow.open("http://www.w3schools.com","","width=1200height=1000");

However, If I pass the url in as a parameter to the function (as below)
the value passed in is "Undefined" and obviously the page will not open

function openThePage(url)
{ url = "http://www." + url;
var newwin = window.open(url,"","width=1200height=1000");
}

<input
class="mybutton"
type="button"
name = "W3Schools"
value="w3schools.com"
onclick="openMyUrl(W3Schools.Value)">
&nbsp;&nbsp;

Anyone any idea how I can do what I want - what I am doing wrong. I am
grey enough as it is and I don't want to start pulling my hair out.

Thanks for help offered

Iain

 

[David Dorward]

Very new to web page design here. Week 1 in fact.

Week 1 and you're on JavaScript already?! I wouldn't advise touching it
until you had mastered HTML and become proficient with CSS.

I am attempting to get the function to open a web page in a new window
in response to a button click.

Oh dear. Foisting new windows on users is a very bad idea at least 99% of
the time.

I can get the page to open if I use the following syntax (hard code the
address)

var newwin =
indow.open("http://www.w3schools.com","","width=1200height=1000");

I'm assuming you accidently dropped the "w" from the start and you actually
have a comma in that last bit. That's a huge window though, it won't fit on
most screens.

However, If I pass the url in as a parameter to the function (as below)
the value passed in is "Undefined" and obviously the page will not open

<input
class="mybutton"
type="button"
name = "W3Schools"
value="w3schools.com"
onclick="openMyUrl(W3Schools.Value)">

What is "W3Schools"? Most browsers do not create global variables with a 1:1
correspondence to any element with a name, and I think that the "Value"
property is case-sensitive (and all lower-case) anyway.

onclick="openMyURL(this.value);"