function touchmove(event, ownerInstance) {
	var touch = event.touches[0];
	var per = event.instance.getDataset().per - 0;
	var x = touch.clientX * per - 70;
	var y = touch.clientY * per - 84;


	ownerInstance.selectComponent('.kefu').setStyle({
		top: y + 'rpx',
		left: x + 'rpx'
	})
	return false // 不往上冒泡，相当于调用了同时调用了stopPropagation和preventDefault
}
module.exports = {
	touchmove: touchmove
}