wxhuanart/miniprogram/miniprogram_npm/tdesign-miniprogram/behaviors/dom.js

export default Behavior({
    methods: {
        gettingBoundingClientRect(selector, all) {
            return new Promise((resolve, reject) => {
                try {
                    wx.createSelectorQuery()
                        .in(this)[all ? 'selectAll' : 'select'](selector)
                        .boundingClientRect((rect) => {
                        if (all && Array.isArray(rect) && rect.length) {
                            resolve(rect);
                        }
                        else if (!all && rect) {
                            resolve(rect);
                        }
                        else {
                            reject();
                        }
                    })
                        .exec();
                }
                catch (err) {
                    reject(err);
                }
            });
        },
    },
});