fix contentDocument is null

Author: hustcc

dist/size-sensor.min.js

@@ -81,8 +81,10 @@ var createSensor = exports.createSensor = function createSensor(element) {
  */
  var destroy = function destroy() {
  if (sensor && sensor.parentNode) {
- // 移除事件
- sensor.contentDocument.defaultView.removeEventListener('resize', resizeListener);
+ if (sensor.contentDocument) {
+ // 移除事件
+ sensor.contentDocument.defaultView.removeEventListener('resize', resizeListener);
+ }
  // 移除 dom
  sensor.parentNode.removeChild(sensor);
  // 初始化

lib/sensors/object.js

@@ -1,6 +1,6 @@
 {
  "name": "size-sensor",
- "version": "0.2.0",
+ "version": "0.2.1",
  "description": "DOM element size sensor which will callback when size changed.",
  "main": "lib/index.js",
  "scripts": {

package.json

@@ -69,8 +69,10 @@ export const createSensor = element => {
  */
  const destroy = () => {
  if (sensor && sensor.parentNode) {
- // 移除事件
- sensor.contentDocument.defaultView.removeEventListener('resize', resizeListener);
+ if (sensor.contentDocument) {
+ // 移除事件
+ sensor.contentDocument.defaultView.removeEventListener('resize', resizeListener);
+ }
  // 移除 dom
  sensor.parentNode.removeChild(sensor);
  // 初始化