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"Virtual Keyboard"

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DigitalBoy

DigitalBoy

Programmer
Oct 11, 2000
87
US
I have the following code that places characters in a text area when buttons are clicked:

<BODY>

<center>
<form>
<input type=text name=amount value=&quot;A&quot;>
<input type=button value=&quot;up&quot; onClick=&quot;javascript:this.form.amount.value='A';&quot;>
<input type=button value=&quot;down&quot; onClick=&quot;javascript:this.form.amount.value='B';&quot;>
</form>
</center>


My question is: How do I code a button for &quot;space&quot;? Meaning, how do I code a button to tell the cursor to move one position right of it's current position?


- DB



dgtlby@excite.com
Administrator

UBB Developers Network

 
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DB,

I made some small changes so that it would make sense to me:


<form>
<input type=text name=amount value=&quot;A&quot;>
<input type=button value=&quot;up&quot; onClick=&quot;javascript:this.form.amount.value += 'A';&quot;>
<input type=button value=&quot;down&quot; onClick=&quot;javascript:this.form.amount.value += 'B';&quot;>
<input type=button
value=&quot;space&quot;
onClick=&quot;javascript:this.form.amount.value += ' ';&quot;>
</form>


Hope this helps
-pete
 
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DB,

palbano's soloution is correct. just so you know, the changes he made were:

<input type=button value=up onclick=&quot;javascript:this.form.amount.value += 'A';&quot;>

and the same was done for the second button
make sure to take this out if you don't want to add the letter. theEclipse
eclipse_web@hotmail.com
**\\||It was recently discovered that research causes cancer in rats||//**
 
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You know, I almost forgot. I tried to modify the code to create a &quot;backspace&quot; button by using something like:

<input type=button value=backspace onClick=&quot;javascript:this.form.amount.value.length--;>

But I didn't have any luck. Any suggestions?

- DB

dgtlby@excite.com
Administrator

UBB Developers Network

 
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This worked for me in NN4.

<input type=button value=backspace onClick=&quot;javascript:this.form.amount.value=this.form.amount.value.substr(0,this.form.amount.value.length-1);&quot;>

Hope this helps.
daban
 
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You know, I had one more question: How do I attach this to an anchor tag? For example, let's say I want to use images or text for my keyboard. I would need to incorporate the javascript in an anchor tag. I tried putting the code in the href tag, but I'm not getting positive results.

Any ideas?

- DB

dgtlby@excite.com
Administrator

UBB Developers Network

 
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if you reference this.form of an 'A' tag, more than likeyl, it will be undefined... you'll have to use a full reference to the form here instead:

document.formname.amount.value jared@aauser.com
 
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<a href=# onclick=&quot;javascript:callforyourcode()&quot;>
 
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Jaredn,

I tried that. What it did instead of adding to the value in &quot;amount&quot; is it refreshed the page with an &quot;A&quot;.

Iza, I'm OK up to that point, now I just need the rest.

The good news is that I just went out and bought a new IDG book on Javascript, so in a month or so, I will be the one answering questions.

- DB

dgtlby@excite.com
Administrator

UBB Developers Network

 
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what do you mean, &quot;the rest&quot; ???
 
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Ok, I just tried the following:


<a href=# onclick=&quot;javascript:this.form.amount.value+='A';&quot; name=&quot;button&quot;>A</a>

I know I must be missing something big here, but it still doesn't work. It keeps telling me that this.form.amount is null or not an object. However the following code works perfectly:

<input type=button value=&quot;A&quot; onClick=&quot;javascript:this.form.amount.value+='A';&quot; name=&quot;button&quot;>

What gives?


- DB
dgtlby@excite.com
Administrator

UBB Developers Network

 
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this is refering to your link. try using the full path, like document.form adam@aauser.com
 
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well, what you should do is:

<a href=# onclick=&quot;javascript:alert(document);&quot; name=&quot;button&quot;>A</a>

it should say object.

then try:

alert(document.form);
alert(document.form.amount)
alert(document.form.amount.value)

till it gives you an error. then you know where your error is, and you can try to fix it.

adam@aauser.com
 
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it was just because of the this
in the a href it was referring to the A tag element
in the input tag it was reffering to the document containing the form
sometimes it's weird, that's why i'm also often using luciddream alert method !
 
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