Javascript uniform motion to achieve fade-in and fade-out effect (code)

The content of this article is about the fade-in and fade-out effect of JavaScript uniform motion (code). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Principle

• When doing p or picture fade-in and fade-out, we mainly use the transparency style filter: alpha(opacity:30) is compatible with ie, opacity:0.3 is compatible Firefox chrome.

• When the motion fades in and out, the timer setInterval;clearInterval;

• When js operates to fade in and out, use the following form to modify the transparency op.style. filter="alpha(opacity:" alpha ")";op.style.opacity=alpha/100;

Note: transparency cannot be judged directly in js, we use the alpha parameter Do the comparison and finally apply it to the object.

Realize div fade-in and fade-out

Realize image fade-in and fade-out

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