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pramod talekar

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since Apr 26, 2010

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Recent posts by pramod talekar

Group by and having clause

I have the below product table :

I want to find out the makers who produce only one product type and more than one model.
The answer is

So far, I have written this query:

It gives the below result:

My question is how to write condition to get result for 1 type only ? as writing having count(type)=1 removes maker D which is required.

6 years ago

JDBC and Relational Databases

Query on window and document object

Hi Bear,

There's absolutely no difference if I replace window with document and vice versa.
In both cases, when I click on either x or the gray screen, the modal window is closed.
What would be the difference between browser window and html document loaded in the window?

6 years ago

HTML Pages with CSS and JavaScript

Query on window and document object

It did work with both.

6 years ago

HTML Pages with CSS and JavaScript

Query on window and document object

Hello,

I have a query regarding window and document objects based on modal window.
Below is my code

<!DOCTYPE html>
<html>
<head>
<title>Modal Test</title>
<style type="text/css">
/*Modal content box */
.modal-content{
background-color: #fefefe;
margin: 15% auto;
padding: 20px;
border:  1px solid #888;
width: 80%;
}
.close{
color:  #aaa;
float: right;
font-size: 28px;
font-weight: bold;
}
.close:hover, .close:focus {
color: black;
text-decoration: none;
cursor: pointer;
}
.modal{
display: none;
position: fixed;
z-index: 1;
left: 0
top:0;
width: 100%;
height: 100%;
overflow: auto;
background-color: rgb(0,0,0);
background-color: rgba(0,0,0,0.4);
}
</style>
</head>
<body>

<button id="myBtn">Open Modal</button>

<div id="myModal" class="modal">

<div class="modal-content">
<span class="close">x</span>
<p>Some text in the Modal..</p>
</div>
</div>
<script type="text/javascript">
var modal = document.getElementById('myModal');
var btn = document.getElementById('myBtn');
var span = document.getElementsByClassName('close');
btn.onclick = function () {
modal.style.display = "block";
}
window.onclick = function(event){
if (event.target == modal) {
modal.style.display = "none";
}
}
</script>
</body>
</html>

My question is regarding this block
Should this not be 'document.onclick' instead of 'window.onclick'?

Below are definitions :
The window object represents the browser window.
The document object represents the HTML document loaded in that window.

Even though replacing window with document works, I want to know what is right here.
Is it right to click anywhere on browser to close modal?

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

Yes Bear.
I added 'return greeting' before the end of greeting().

Thanks !

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

My bad ! Sorry for the trouble Bear and Paul.

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

Another point is that, if I move getName() outside greetUser(), even then greeting() won't have any return statement, then why does 'Welcome Molly'appear instead of undefined?

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

Thanks so much Paul for your reply. But I still didn't get why Welcome Molly was not displayed.. what's the logic behind it?
If you are saying that greeting doesn't have a return statement, then why do I see 'welcome Molly' simply by moving getName() outside greetUser()?

I can't agree more with you on accidently fixing the error, that's why asking this question..

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

Thanks Bear, I have got few questions though..

1.As each function has its own execution context and as getName() has only declarative statements and not expressions, why does the alert statement displays 'undefined' instead of Welcome Molly ?
2. Even if I move the return statement down, it doesn't change the outcome.
3. If I move getName() out of greetUser(), only then it works, but then even greetUser() is a part of greeting() and it can access it's parent's variables viz. time, then what is so different about getName()?

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

Hi Bear, I'm analyzing someone else's code.

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

Stephan van Hulst wrote:function three() { // } var foo = three();
What do you need to do to make the function call evaluate to the number 3?

It should have return 3;

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

Didn't get your question..

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

Stephan van Hulst wrote:Nope. When does a function call have a return value?

Didn't quite get this.. It returns when the return statement is executed.

6 years ago

HTML Pages with CSS and JavaScript

Getting error in JavaScript

If I take the getName() function out of greetuser(), then it returns 'Welcome Molly' otherwise undefined.

6 years ago

HTML Pages with CSS and JavaScript