How to use forEach loop correctly in angular 2?

I am new to Angular2 and here I am trying to loop through the array "mmEditorTypes" and checking the condition, if the condition is satisfied then I'll be executing the "open method".

But whenever i execute the below code, I am getting this error :

portalModeService: loading of portalMode threw exception:

TypeError: Cannot read property 'forEach' of undefined".

Could someone let me know how to fix this error?

porta.service.ts :

function isAppContained(viewState, appType){ let angular:any; let isContained = false; angular.forEach(viewState.appViewStates, function (appViewState) { if (appViewState.signature.appType === appType) { isContained = true; } }); return isContained; }

2 Answers

As @Sajeetharan said you can't use angular.forEach in angular 2+

So you can use simple foreach in typescript like :

var someArray = [1, 2, 3];
someArray.forEach((item, index) => { console.log(item); // 1, 2, 3 console.log(index); // 0, 1, 2
});

You cannot use angular.forEach with angular , its with angularjs.

use

for (let appViewState of viewState.appViewStates) { if (appViewState.signature.appType === appType) { isContained = true; }
}