We are referring here to Spring ’20 Release Notes available on the Salesforce help section.
We have removed the @track decorator from all the variables in our test project, but it was not working for the few variables.
After more detail, we found one exception while removing the @track decorator, i.e., when using objects. So, if we change the property of an object, it will not render the same on UI. Unless the object variable is not having a @track decorator. Let’s see the below code example,
Here we are returning object wrapper from apex code.
AccountDTWrapper objDT = new AccountDTWrapper(); objDT.pageSize = pageSize; objDT.pageNumber = pageNumber; objDT.recordStart = offset + 1; objDT.totalRecords = totalRecords; objDT.account=[select Id,Name from Account limit 10]; return objDT;
Firstly, if you change any value of the wrapper object here in this js file, it will not reflect on UI if the @track decorator is not used. So I have used the @track decorator for datatypes of the object type.
// Component rerenders. @track result; this.result. recordStart = 10;
We hope to use the information, and you can use the @track decorator object to its optimum use.
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