javascript - How to use setTimeout with every item in an array? -

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in following: 

ko.utils.arrayforeach(cards, function (card) {         settimeout(function () {             observabledata().savecard(card);         }, 1000);     });

this supposed waiting 1 second every card in array, waits 1 second , blasts through array. how can achieve expected behavior?

you need increment timeouts

var idx = 1; ko.utils.arrayforeach(cards, function (card) {     settimeout(function () {         observabledata().savecard(card);     }, (idx++) * 1000); });

since arrayforeach doesn't giving index of item, need maintain separate index


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