javascript - 将淡入添加到 javascript 计时器

Question

在我的 html 正文中，我使用了一个 javascript，它每 5 秒在我的 div 中写入和更改一行文本，ID 为“moto”。

    var text = ["TEXT 1","TEXT 2","TEXT 3","TEXT 4"];
    var counter = 0;
    var elem = document.getElementById("moto");
    ChangeFunction();
    setInterval(ChangeFunction, 5000);
    
    function ChangeFunction() {
        elem.innerHTML = text[counter];
        counter++;
        if(counter >= text.length) { counter = 0; }
    }

    #moto{
      -webkit-transition: all 1s ease-in-out;
      -moz-transition: all 1s ease-in-out;
      -o-transition: all 1s ease-in-out;
      transition: all 1s ease-in-out;
    } 

<div id="moto"></div>
   

我需要应用一些 java 淡入淡出吗？我宁愿使用 CSS...

Answer 1

您可以使用 jquery 轻松完成此操作，如下所示

var text = ["TEXT 1","TEXT 2","TEXT 3","TEXT 4"];
var counter = 0;
var elem = document.getElementById("moto");
ChangeFunction();
setInterval(ChangeFunction, 5000);

function ChangeFunction() {
    var moto = text[counter++];
    $(elem).fadeOut('slow', function() {
      $(elem).html(moto);
      $(elem).fadeIn('slow');
    });

    if(counter >= text.length) { counter = 0; }
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="moto"></div>