I want use [(ngModel)] to two way binding data, but it is not work. I check the date picker's ts file, found the solution: 1. use selDate to set init date : [selDate]="publishDate" now = new Date(); publishDate = {year: this.now.getFullYear(), month: this.now.getMonth() + 1, day: this.now.getDate()}; 2. set date when date change (dateChanged)="onDateChange($event)" onDateChange(event) { console.log(event); } Then you'll get formatted date string like "2017-10-20", if you set format is "yyyy-mm-dd"

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