Consider an HTML form with a checkbox and a text field. When data is entered and the return key is pressed, the data seems to be lost before the user can click on the button that calls the processing function. How do you correct this?

technology web 2.0

  1. Add a TYPE=HIDDEN INPUT to the form

  2. Trap the return keypress and return (null)

  3. Add 'return false' to onsubmit="..." in the FORM tag

  4. Instruct the user not to press the Return key.

Show answer
Correct Option: C

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) Add a TYPE=HIDDEN INPUT to the form - This option is incorrect because adding a hidden input field to the form will not prevent the data from being lost when the return key is pressed.

Option B) Trap the return keypress and return (null) - This option is incorrect because trapping the return keypress and returning null will not prevent the data from being lost when the return key is pressed.

Option C) Add 'return false' to onsubmit="..." in the FORM tag - This option is correct. Adding 'return false' to the onsubmit attribute in the FORM tag will prevent the form from being submitted when the return key is pressed. This will ensure that the data entered by the user is not lost before they have a chance to click on the button that calls the processing function.

Option D) Instruct the user not to press the Return key - This option is incorrect because instructing the user not to press the return key is not a reliable solution. Users may still accidentally press the return key, leading to data loss.

The correct answer is Option C) Add 'return false' to onsubmit="..." in the FORM tag. This option is correct because it prevents the form from being submitted when the return key is pressed, thereby preventing the data loss.

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