如何将yyyy-mm-ddthh-mm-ssz转换为yyyy-mm-dd格式[重复]

I have an input in my page to capture a date. I need it in "yyyy-mm-dd" format but it's saving it in "yyyy-mm-ddthh-mm-ssz".

<input id="celular" type="date" date="yyyy/mm/dd" class="browser-default" ng-model="cumpleanos" >

I need to format to yyyy-mm-dd in the front or in the back.

When I inspect the header of the data send I see this:

cumpleanos: "2018-03-01T05:00:00.000Z"

and the database sends me this error:

Incorrect date value: '2018-03-01T05:00:00.000Z' for column 'cumpleanos' at row 1

The column cumpleanos is a date type column.

</div>

You could just use substring:

var time = "2018-03-01T05:00:00.000Z";
time = time.substring(0,10);

console.log(time);
// "2018-03-01"

</div>