JavaScript Part 2

Integer Variable is declared using following syntax in JavaScript

Why so JavaScript and Java have similar name?

Choose the server-side JavaScript object?

What is the special feature of the modern web applications?

c.
d.

What is not true about try-catch block?

I. The try statement allows you to define a block of code to be tested for errors while it is being executed

II. The catch statement allows you to define a block of code to be executed, if an error occurs in the try block

III. try {Block of code to try }

catch( Exception err){

message.innerHTML = "Input is " + err;  }

IV. The finally statement lets you execute code, after try and catch, regardless of the result

How to create a Date object in JavaScript?

What are variables used for in JavaScript Programs?

What will be output of following code into alert:

 

"use strict";
myFunction();

function myFunction() {
y = 3.14;

alert("Value of y is " +y);
}

To change the style of an HTML element correct Syntax is

What is the correct JavaScript syntax to write "Hello World"?

Which is true about string methods ?

I. The indexOf() method returns the index of  the first occurrence of a specified text in a string

II. The lastIndexOf() method returns the index of the last occurrence of a specified text in a string

III. Both the indexOf(), and the lastIndexOf() methods return -1 if the text is not found

Which of the following is not a valid JavaScript variable name?

What will be output ?

<script language="javascript">
function x()
{
document.write(2+5+"8");
}
</script>

When a user views a page containing a JavaScript program, which machine actually executes the script?

What will be output ?

<h1 onclick="changeText(this)">Click on this text!</h1>

<script>
function changeText(id) {
id.innerHTML = "Ooops!";
}
</script>

JavaScript entities start with _______ and end with _________.

Which is correct way to get object index value.

Which of the following best describes JavaScript?

Consider the following code snippet

const pi=3.14;

var pi=4;

console.log(pi);

What will be the output for the above code snippet?

 

 

Which is correct Syntax to sort  numerical array alphabetically

array is : var points = [40, 100, 1, 5, 25, 10];

I.  points.sort(function(a, b){return a - b});

II.  points.sort(function(a, b){return b - a});

III.  points.sort();

 

Which of the following can't be done with client-side JavaScript?

_____ JavaScript statements embedded in an HTML page can respond to user events such as mouse-clicks, form input, and page navigation.

Which is not an Javascript HTML event

Using _______ statement is how you test for a specific condition.

How does JavaScript store dates in a date object?

What is  not true about String Functions?

I.  slice(), substring(), substr() are  methods for extracting a part of a string

II. If a parameter is negative, the position is counted from the end of the string

III. If you omit the second parameter, the method will slice out the rest of the string

IV.  substring() is not similar to slice() and  substring() cannot accept negative indexes.