RxJS concat() Join Operator
The RxJS concat() operator is a join operator that creates an output Observable, which sequentially emits all values from the given Observable and then proceed to the next one.
Following is the syntax of the concat() operator:
observables: It specifies that the input given is an array of Observables.
The concat() operator's return value is an observable that gives a single value merged from the values of the different source observables.
Let us see an example of concat() operator to understand it clearly.
After executing the above example, you will see the following result: