JavaScript Date.setDate()

Why setDate ?

The JavaScript Date setDate () method is a built-in function. This metadata sets the day of the month for a specific date by local time.

Syntax:

Date.setDate(day)

• day (required): An integer representing the month of a specific date. The first day of the month is represented by 1, the last day is 31 or 0. If a month is 30 days, and we enter 33 as a value, we will not encounter an error. The setDate () method then takes 33 – 30 = 3. That is the third day of the next month.

return:

• A Number, representing the number of milliseconds between the date object and midnight January 1 1970

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JavaScript setDate Examples

Example 1

JavaScript Date With the setDate () method, we can change the day at a specific date.

        var date = new Date('April 21, 1983 22:47:55');
        console.log(date.getDate());

        date.setDate(14);
        console.log(date.getDate());

21
14

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Example 2

JavaScript Date The setDate () method can change today’s date.

        var now = new Date();
        console.log(now.getDate());

        now.setDate(22);
        console.log(now.getDate());

7
22

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Example 3

The first day of the month is represented by 1, the last day is 31 or 0.

        var date = new Date('October 21, 1983 09:22:12');
        console.log(date.getDate());

        date.setDate(0);
        console.log(date.getDate());

21
30

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Example 4

        var date = new Date('October 21, 1983 09:22:12');
        console.log(date.getDate());


        date.setDate(34);
        console.log(date.getDate());

3

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Browser Support

Chrome	yes
Edge	yes
Firefox	1
Internet Explorer	yes
Opera	yes
Safari	yes
Android webview	yes
Chrome for Android	yes
Edge mobile	yes
Firefox for Android	4
Opera Android	yes