2回答

慕UI5297780

提问者

2021-04-15

 代码在better-scroll.esm.js文件的2262行中，下面是部分代码，offsetWidth在加粗那一行

Scroller.prototype.scrollToElement = function (el, time, offsetX, offsetY, easing) {

        var targetEle = getElement(el);

        var pos = offset(targetEle);

        var getOffset = function (offset, size, wrapperSize) {

            if (typeof offset === 'number') {

                return offset;

            }

            // if offsetX/Y are true we center the element to the screen

            return offset ? Math.round(size / 2 - wrapperSize / 2) : 0;

        };

        offsetX = getOffset(offsetX, targetEle.offsetWidth, this.wrapper.offsetWidth);

        offsetY = getOffset(offsetY, targetEle.offsetHeight, this.wrapper.offsetHeight);

        var getPos = function (pos, wrapperPos, offset, scrollBehavior) {

            pos -= wrapperPos;

            pos = scrollBehavior.adjustPosition(pos - offset);

            return pos;

        };

        pos.left = getPos(pos.left, this.wrapperOffset.left, offsetX, this.scrollBehaviorX);

        pos.top = getPos(pos.top, this.wrapperOffset.top, offsetY, this.scrollBehaviorY);

        if (this.hooks.trigger(this.hooks.eventTypes.scrollToElement, targetEle, pos)) {

            return;

        }

        this.scrollTo(pos.left, pos.top, time, easing);

    };

    Scroller.prototype.resetPosition = function (time, easing) {

        if (time === void 0) { time = 0; }

        if (easing === void 0) { easing = ease.bounce; }

        var _a = this.scrollBehaviorX.checkInBoundary(), x = _a.position, xInBoundary = _a.inBoundary;

        var _b = this.scrollBehaviorY.checkInBoundary(), y = _b.position, yInBoundary = _b.inBoundary;

        if (xInBoundary && yInBoundary) {

            return false;

        }

        /* istanbul ignore if  */

        if (isIOSBadVersion) {

            // fix ios 13.4 bouncing

            // see it in issues 982

            this.reflow();

        }

        // out of boundary

        this.scrollTo(x, y, time, easing);

        return true;

    };

0

3

Dell

itemRefs['A'] 呢

2021-04-20

共3条回复

Dell

2021-04-15

offsetWidth 对应的代码在哪里？

0

0