不使用被动侦听器来提高滚动性能(灯塔报告) [英] Does not use passive listeners to improve scrolling performance (Lighthouse Report)

问题描述

最近的灯塔报告标记了以下问题.

A recent Lighthouse Report flagged the following issue.

不使用被动侦听器来提高滚动性能

Does not use passive listeners to improve scrolling performance

它也提到...

请考虑将触摸和滚轮事件侦听器标记为passive，以提高页面的滚动性能.

Consider marking your touch and wheel event listeners as passive to improve your page's scroll performance.

如何解决此问题?它似乎与jQuery有关.

How do I resolve this issue? It appears to be related to jQuery.

推荐答案

在简而言之:

• jQuery无法添加对被动侦听器的支持.

• 预计这是在jQuery 4中添加的(4年后仍在

• jQuery can't add support to passive listeners.

• Is expected that this is added in jQuery 4 (4 years and still in

1. 5.x)

建议的修补程序是在jQuery加载后立即添加以下代码:

jQuery.event.special.touchstart = {
        setup: function( _, ns, handle ){
            this.addEventListener("touchstart", handle, { passive: true });
        }
    };

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