html - elementUI problem used in vue project

Question

The vue project uses elementUI. After it is installed, elementUI is used to build the page input placeholder. The placeholder is not displayed. How to solve the problem that the data is not echoed after the select drop-down list is selected?
There is no problem with selecting and passing the value, but it is not displayed, the placeholder prompt is not displayed, and the pop-up window of elementUI is not displayed either.

Urgent need for answers. It feels like an incompatibility issue

Answer 1

The value can be transferred and it works normally, but it won’t update when selected in the select drop-down, right? Is it a version problem? What version are your vue and element? If element is below 1.2.5, vue should not exceed 2.14. If element is below 1.2.9, vue should not exceed 2.2.6. If they are all the latest versions, paste the code! Next time you ask, it's best to paste the code, otherwise it will be difficult to guess the answer!