如何解决:此代码上的“无法在被动事件侦听器中阻止Default ...”?

时间:2019-06-22 14:48:44

标签: javascript jquery preventdefault passive-event-listeners

Chrome在控制台上给了我这个错误:

  

[干预]无法阻止被动事件侦听器中的Default   由于目标被视为被动。看到   https://www.chromestatus.com/features/6662647093133312

代码部分是这个(特别是这部分'event.preventDefault();'):

/**
             * Mouse wheel handler.
             * @param {Object} event
             */
            function wheel(event) {

                if (!initDone) {
                    init();
                }

                var target = event.target;
                var overflowing = overflowingAncestor(target);

                // use default if there's no overflowing
                // element or default action is prevented
                if (!overflowing || event.defaultPrevented ||
                    isNodeName(activeElement, "embed") ||
                   (isNodeName(target, "embed") && /\.pdf/i.test(target.src))) {
                    return true;
                }

                var deltaX = event.wheelDeltaX || 0;
                var deltaY = event.wheelDeltaY || 0;

                // use wheelDelta if deltaX/Y is not available
                if (!deltaX && !deltaY) {
                    deltaY = event.wheelDelta || 0;
                }

                // check if it's a touchpad scroll that should be ignored
                if (!options.touchpadSupport && isTouchpad(deltaY)) {
                    return true;
                }

                // scale by step size
                // delta is 120 most of the time
                // synaptics seems to send 1 sometimes
                if (Math.abs(deltaX) > 1.2) {
                    deltaX *= options.stepSize / 120;
                }
                if (Math.abs(deltaY) > 1.2) {
                    deltaY *= options.stepSize / 120;
                }

                scrollArray(overflowing, -deltaX, -deltaY);
                event.preventDefault();
            }

如何在上面的代码中解决此问题?

谢谢。

0 个答案:

没有答案