The clear method of the JavaScript Set object is employed to eliminate all elements contained within the Set.
Syntax
The syntax for the clear method is as follows:
Example
setObj.clear()
JavaScript Set clear method example
In this section, we will explore the clear method by examining several examples.
Example 1
Let's see a simple example of clear method.
Example
<script>
var set = new Set();
set.add("jQuery");
set.add("AngularJS");
set.add("Bootstrap");
document.writeln("Size before invoking clear() method: "+ set.size+"<br>");
set.clear();
document.writeln("Size after invoking clear() method: "+set.size);
</script>
Output:
Output
Size before invoking clear() method: 3
Size after invoking clear() method: 0
Example 2
Consider an example to assess whether the set object includes the designated element.
Example
<script>
var set = new Set();
set.add("jQuery");
set.add("AngularJS");
set.add("Bootstrap");
document.writeln("Element present before invoking clear() method: "+ set.has("Bootstrap")+"<br>");
set.clear();
document.writeln("Element present after invoking clear() method: "+set.has("Bootstrap"));
</script>
Output:
Output
Element present before invoking clear() method: true
Element present after invoking clear() method: false
