技能特效源码(js特效源码)

2023-08-28 15:14:21

技能特效源码(js特效源码) 技能特效在网页设计中有着非常重要的作用，能够为网站注入活力和美感。而js特效是实现技能特效的重要工具之一，下面我们将介绍一些常用的技能特效源码。 1. 进度条特效：

    <div id=\progress\gt;
        <div class=\progress-bar\gt;</div>
    </div>
    <script>
        var progressBar = document.querySelector('.progress-bar');
        var width = 0;
        setInterval(function() {
            if (width < 100) {
                width++;
                progressBar.style.width = width + '%';
            }
        }, 50);
    </script>

2. 饼图特效：

    <div id=\pie-chart\gt;
        <canvas width=\200\ height=\200\gt;</canvas>
        <span class=\percent\gt;</span>
    </div>
    <script>
        var canvas = document.querySelector('canvas');
        var context = canvas.getContext('2d');
        var percentSpan = document.querySelector('.percent');
        var percent = 0;
        var interval = null;
        function drawPie() {
            context.clearRect(0, 0, canvas.width, canvas.height);
            context.beginPath();
            context.moveTo(canvas.width / 2, canvas.height / 2);
            context.arc(canvas.width / 2, canvas.height / 2, canvas.width / 2, 0, Math.PI * 2 * percent / 100);
            context.closePath();
            context.fillStyle = '#ff0000';
            context.fill();
            percentSpan.innerHTML = percent + '%';
        }
        interval = setInterval(function() {
            if (percent < 100) {
                percent++;
                drawPie();
            }
        }, 50);
    </script>

3. 折线图特效：

    <div id=\line-chart\gt;
        <canvas width=\400\ height=\200\gt;</canvas>
    </div>
    <script>
        var canvas = document.querySelector('canvas');
        var context = canvas.getContext('2d');
        var data = [20, 50, 80, 30, 70, 50, 90];
        var interval = null;
        function drawLine() {
            context.clearRect(0, 0, canvas.width, canvas.height);
            context.beginPath();
            context.moveTo(0, canvas.height - data[0]);
            for (var i = 1; i < data.length; i++) {
                context.lineTo(canvas.width / (data.length - 1) * i, canvas.height - data[i]);
            }
            context.strokeStyle = '#ff0000';
            context.stroke();
        }
        interval = setInterval(function() {
            if (data[0] < 100) {
                for (var i = 0; i < data.length; i++) {
                    data[i]++;
                }
                drawLine();
            }
        }, 50);
    </script>

总结：以上就是几种常用的技能特效源码，希望能为大家在网页设计中提供一定的帮助。而对于js特效源码的学习，需要不断练习和实践，才能够熟练掌握和灵活运用。