i create multiple product with increment decrement for quantity like shopping cart... i have multiple product list with quantity increment ..i want to sum total qty from multiple products ... how to sum this
this is my output: 9
how to get this in angular
sum operation only enough for me when click on button
CodePudding user response:
You could have event emitter that create an event whenever the user click the minus or plus button of the child item component. When you emit the event you send some data, whatever it was clicked plus or minus and update the sum variable in the parent component. See https://angular.io/guide/inputs-outputs#sending-data-to-a-parent-component
CodePudding user response:
You can do that using reactive forms. https://angular.io/guide/reactive-forms