Call Javascript Method Variable Loses 'this'

I've created a simple pointer to a method like so: export class SmbwaService { getExistingArsByLab(labId: number): Observable { this.otherMethod();

Solution 1:

Use Function.bind to obtain a function reference that's bound to a particular value of this:

method = this.service.getExistingArsByLab.bind(this.service)
method(2)