Guide to sending jQuery data back to main class in TypeScript

Hi everyone, I'm diving into the world of typescript and JQuery. I have a simple question. In my typescript class called DatePicker, I am calling a function. Here's a snippet of the code:

Class DatePicker {
private pickerData;
    public update() {
         thisi.pickerData = '';
         $('#reportrange').on('apply.daterangepicker', function(ev, picker: any) {
            // return "picker" object to Class level property "pickerData"
          });
   }
}

The function is being called successfully but I am facing an issue where I want to return the "picker" object outside of the jQuery function and assign it to pickerData. The problem is that inside the jQuery function, the Class 'this' is not accessible. I want to avoid using static properties in the class because I want to maintain the flow back to the class from the jQuery function. Can anyone offer some guidance on how to solve this?

Answer №1

I came across the solution in a different thread on Stack Overflow. Below is the link to the thread along with a brief explanation of how I implemented the suggested answer.

How to access the correct `this` inside a callback?

Using Arrow function-

The key is to use an arrow function as it provides access to the desired 'this' context, unlike using the function keyword which can lead to incorrect referencing inside certain functions.

$('#reportrange').on('apply.daterangepicker', (ev, picker: any) => {
            this.pickerData = picker;
          });

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