The delete method checks if a value already exists in the set, if it does, then it removes that value from the set. We can implement it as follows &minusl
Example
delete(val) { if (this.has(val)) { delete this.container[val]; return true; } return false; }
You can test this using −
Example
const testSet = new MySet(); testSet.add(1); testSet.add(2); testSet.add(5); testSet.delete(5); testSet.delete(2); testSet.display(); console.log(testSet.has(5)); console.log(testSet.has(20)); console.log(testSet.has(1));
Output
This will give the output −
{ '1': 1} False False True
In ES6, you use the delete function as follows −
Example
const testSet = new MySet(); testSet.add(1); testSet.add(2); testSet.add(5); testSet.delete(5); console.log(testSet.has(5)); console.log(testSet.has(20)); console.log(testSet.has(1));
Output
This will give the output −
False False True