Javascript Questions Set 43:
How many standard WebSocket events are available?
Solution:
How do we create and preload an image object in JavaScript?
Solution:
When will the window property come into play?
Solution:
What is the purpose of form control elements in the HTML DOM?
Solution:
What will be the output of the following code?
const module = {
x: 42,
getX: function() {
return this.x;
}
}
const unboundGetX = module.getX;
console.log(unboundGetX());
Solution:
What does it indicate when the type attribute of the navigation object is set to 2?
Solution:
Which of the following statements about AJAX is false?
Solution:
What is the output of the following code?
const array1 = [100, 's', new Date('18 jan 2020 14:12:00 UTC')];
const locString = array1.toLocaleString('en', {timeZone: "UTC"});
console.log(locString);
Solution:
What will be the output of the following JavaScript code?
var scope = "global scope";
function checkscope()
{
var scope = "local scope";
function f()
{
return scope;
}
return f;
}
Solution:
function chemistryelement()
{
var chem=document.getElementsByName("elements");
alert("Total Elements:"+chem.length);
}
<form>
<input type="radio" name="elements" value="Sulphur">
<input type="radio" name="elements" value="Oxygen">
<input type="radio" name="elements" value="Neon">
<input type="button" onclick="chemistryelement()" value="Total Elements">
</form>
Solution:
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