checkElementExist

content-script.js

@@ -172,6 +172,12 @@ function assistLoad(itemId) {
             //   body: "{\"code\":\"document.querySelector('.conn-box .show').innerHTML='gf'\"}",
             //   redirect: "follow"
             // })
+            case "checkElementExist":
+                if (domTemp) {
+                    sendCallBack(event.data.callBackID, {"err": 0, "exist": true})
+                } else {
+                    sendCallBack(event.data.callBackID, {"err": 1, "exist": false, "msg": "元素不存在!"})
+                }
             case "querySelectorAll":
                 let returnList = []
                 let elTemp = null