There are two methods to implement the tips for text box input to disappear _ javascript skills

Method 1: placeholder, a new feature based on HTML5input labels. In addition, the x-webkit-speech attribute can be used for voice input. The second method is to simulate and locate the span using the span function. The JS keyboard event is used to determine whether the content in the span is displayed and hidden. Method 1:
A new feature based on HTML5 input tags-placeholder. In addition, the x-webkit-speech attribute enables voice input.

The Code is as follows:

Method 2:
Use span to simulate and locate the span, and use JS Keyboard Events to determine whether the content in the span is displayed or hidden.

The Code is as follows:

Untitled document