I have an input field that needs to be incremented by one month using the JavaScript Date object. Below is an example of an effort I have made in incrementing the month. T
You'll have to get the text out of the text box, which you can then pass to the Date() constructor:
var d = new Date(text);
Then format the date string:
var str = d.getDate(), d.getMonth() + 1, d.getFullYear()
And set the test box to that value