JS-日期转换为字符串格式

Question

I am trying to get the script to display yesterdays date in "m/d/yy" format. When I use this code:

<p>
    Here is the report for 
    <script>
        var yesterday = new Date();
        yesterday.setDate(yesterday.getDate() - 1);
        document.write(yesterday.format("m/d/yy"));
    </script>
    .
</p>

this is returned:

Here is the comparison report for .

if I put it in without the .format("m/d/yy") , I get this:

Here is the comparison report for Thu Mar 27 2014 15:42:31 GMT-0700 (Pacific Daylight Time) .

What am I doing wrong?

Answer 1

document.write(yesterday.getMonth() + "/" + yesterday.getDay() + "/" +  yesterday.getFullYear())

The date object has many methods for displaying various parts of it. See here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date