Does the AngularJS ng-repeat Directive render all items in the browser whenever a single item is updated?

Imagine having a collection with 5000 records and only updating one record from it. Will the browser render all 5000 entries again?

ng-repeat="item in ctrl.employeeData"

After receiving updates for individual records, it takes between 2 to 5 seconds to render those items in the browser.

Does ng-repeat rebuild everything from scratch?

Please provide suggestions for a solution.

I prefer not to use pagination or lazy loading. I want to display all records at once.

Answer №1

Typically, a re-rendering of everything occurs. To prevent this and enhance performance, utilize track by to explicitly monitor a specific property. This is necessary as it requires your data to contain a field that is unique. By default, Angular will use the $$hashKey property added automatically by the ngRepeat directive.

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