How to realize that the html5 input box cannot be empty

How to implement that the html5 input box cannot be empty: 1. Create a form "

"; 2. Add an Input text box , and then by adding the required attribute, the effect that the input box cannot be empty can be achieved.

#The operating environment of this tutorial: Windows 10 system, HTML5 version, Dell G3 computer.

html5 How to realize that the input box cannot be empty?

html5 The text box of the setting form cannot be empty

We create a new html web page file and name it test.html. Next we use test .html file to explain how html5 sets the text box of the form to not be empty.

In the test.html file, we need to create a form

.

Add an Input text box to the form and add the required attribute. .

Browse test.html in the browser and click the submit button to see if the effect can be achieved.

Recommended study: "HTML5 Video Tutorial"

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