Question

我想将渐变设置为另一个渐变。这是我的Codepen：https://codepen.io/EYT/pen/YvPEVQ。我使用鼠标距离作为变量来向上调整渐变。

这个渐变应该是起点，它不应该低于此（当鼠标的距离大于300px时它会发生这种情况）：

$element.css('background', 'linear-gradient(0deg, rgba(255, 66, 42, 1) '+(300-distance)/2+'%, rgba(217, 60, 40, 1) '+(305.24-distance)/2+'%, rgba(174, 54, 39, 1) '+(312.1-distance)/2+'%, rgba(136, 48, 37, 1) '+(319.52-distance)/2+'%, rgba(104, 44, 36, 1) '+(327.42-distance)/2+'%, rgba(78, 40, 35, 1) '+(335.92-distance)/2+'%, rgba(58, 37, 34, 1) '+(345.26-distance)/2+'%, rgba(44, 35, 33, 1) '+(355.86-distance)/2+'%, rgba(35, 33, 33, 1) '+(368.84-distance)/2+'%, rgba(33, 33, 33, 1) '+(390.96-distance)/2+'%)');

并且在到达元素100px距离的路上，它应该被动画化为此渐变：

$element.css('background', 'linear-gradient(0deg, rgba(255, 66, 42, 1) '+(300-distance)/2+'%, rgba(217, 60, 40, 1) '+(325.24-distance)/2+'%, rgba(174, 54, 39, 1) '+(352.1-distance)/2+'%, rgba(136, 48, 37, 1) '+(379.52-distance)/2+'%, rgba(104, 44, 36, 1) '+(407.42-distance)/2+'%, rgba(78, 40, 35, 1) '+(435.92-distance)/2+'%, rgba(58, 37, 34, 1) '+(465.26-distance)/2+'%, rgba(44, 35, 33, 1) '+(495.86-distance)/2+'%, rgba(35, 33, 33, 1) '+(528.84-distance)/2+'%, rgba(33, 33, 33, 1) '+(570.96-distance)/2+'%)');

有人知道如何做到这一点吗？

谢谢！

Answer 1

尝试将px转换为％并使用scaleY（$ {percent / 100）}）

这是一个例子，但您必须根据自己的需要进行调整：

(function() {
    var element = document.getElementById("element");
    var onMouseMove = function(evt) {
      const percent = ((evt.clientY / document.documentElement.scrollHeight) * 100);
      element.style.transform = `scaleY(${(percent / 100)}`;

    }
    document.addEventListener('mousemove', onMouseMove);
})();

https://codepen.io/anon/pen/rKadWB?editors=1111

使用JavaScript将一个CSS渐变动画到另一个

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