What does blur mean in javascript

This article mainly introduces the relevant knowledge of "what blur refers to in javascript". Xiaobian shows you the operation process through actual cases. The operation method is simple and fast, and the practicality is strong. I hope this article "what blur refers to in javascript" can help you solve the problem.

Blur in javascript means to lose focus; when the user clicks on a text box with the mouse, it generates a focus, and when the user clicks elsewhere, the cursor disappears and the text box loses focus.

Operating environment: Windows 7 system, javascript version 1.8.5, DELL G3 computer

What is Blur in JavaScript?

Specific issues:

What does this.blur() do? What does losing focus or moving out of focus mean?

Analysis:

Blur() means to lose focus. Simply put, when you click on a page with the mouse, it will generate a focus accordingly. For example, if you click on a text input box, the cursor will move there. At this time, that text box will gain a focus. When you click elsewhere, the cursor will disappear and that text box will lose focus.

When you click on a hyperlink, a dotted line appears around the hyperlink and it gains focus.

The two examples above are simple and visible elements, but there are many invisible elements or containers that can also get focus, such as SPAN, DIV, P, etc. You can't see the page change after clicking, but it actually gets focus.

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