How to obtain the option text value in javascript (used in firefox)

How does javascript get the text value of option (used in firefox)

There is no innerText in Firefox, so it is difficult to obtain the option text (not the value) in firefox. I will summarize the solutions and code in my project. Please advise.

Knowledge point:

0. Why innerText? Security problems

1. Extend attributes for the firefox dom Model

2. The currentStyle attribute can get the actual style status.

3. The display mode is taken into account when IE implements innerText. If it is block, a line break is added.

4. Why not use textContent? Because textContent does not consider the display method of elements, it is not fully compatible with IE.

Code: IE6, 7,8, and firefox 2 and 3 are all tested.