Adjust the background shade of specific characters within an input text field

When a user inputs a string into a standard HTML input field (type="text"), such as "2013/13/29", and validation reveals that the number 13 is invalid in this context, I would like to visually highlight it by changing its background color to red while turning all other characters' backgrounds green. Is there a way to achieve this effect using HTML? Maybe by utilizing a span element within the input tag.

Answer №1

Unfortunately, you cannot insert a span element inside an input tag. However, a convenient solution is to utilize the jqueryUI datetimepicker. This will greatly streamline the process for you. Check it out here: http://jqueryui.com/datepicker/

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