What will be the output of the following JavaScript code?
set.add(“AngularJS”);
set.add(“Bootstrap”);
set.delete(“Bootstrap”);
document.writeln(set.size);
a) 2
b) 1
c) 0
d) undefined
Answer: b
Explanation: The delete() method is used to remove all the elements from the Set object which are passed as an argument to the delete function. Since the delete function is called once the size will be reduced to 1.
Related Posts
What will be the output of the following JavaScript code?
<p id=”demo”></p>
<script>
document.getElementById(“demo”).innerHTML = Math.sqrt(49);
</script>What will be the output of the following JavaScript code?
<p id=”demo”></p>
<script>
document.getElementById(“demo”).innerHTML = Math.floor(4.7);
</script>What will be the output of the following JavaScript code?
<p id=”demo”></p>
<script>
document.getElementById(“demo”).innerHTML = Math.min(0, 150, 30, 20, -8, -200);
</script>What will be the output of the following JavaScript code?
<p id=”demo”></p>
<script>
document.getElementById(“demo”).innerHTML = Math.abs(-4.5);
</script>What will be the output of the following JavaScript code?
<p id=”demo”></p>
<script>
document.getElementById(“demo”).innerHTML = Math.sin(90 * Math.PI / 180);
</script>The new Java arrays can be created into JavaScript programs using which of the following classes?
The JavaScript classes can be instantiated using _____ operator.
Join The Discussion