In JavaScript, you can use the fadeIn() method to realize the word slowly appearing. This method can gradually change the opacity of the selected element from hidden to visible. You can set the speed of the word slowly appearing in the parameter. , the syntax is "text element object.fadeIn(speed);".
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
fadeIn() method gradually changes the opacity of the selected element from hidden to visible (fading effect).
The syntax is:
$(selector).fadeIn(speed,easing,callback)
The parameters are:
speed is optional. Specifies the speed of the fading effect. Possible values:
milliseconds
"slow"
"fast"
easing Optional. Specifies the element's speed at different points in the animation. The default value is "swing". Possible values:
"swing" - moves slower at the beginning/end, faster in the middle
"linear" - moves at a constant speed
callback Optional. The function to be executed after the fadeIn() method is executed.
The example is as follows:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>123</title>
<script src="js/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$(".btn1").click(function(){
$("p").fadeOut(3000)
});
$(".btn2").click(function(){
$("p").fadeIn(3000);
});
});
</script>
</head>
<body>
<button class="btn1">淡出</button>
<button class="btn2">淡入</button>
<p>这是一个段落。</p>
</body>
</html>Output result:
javascript video tutorial 、webfrontend】
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