Js different callback setting variables report error - Codes Helper - Programming Question Answer

Js different callback setting variables report error

<button @click="getNearby" class="nearby">{{ destinationAddress }}</button>

    setDestinationAddress (addressComponents) {
      this.destinationAddress = addressComponents.city + addressComponents.district + addressComponents.street + addressComponents.streetNumber
    },
    getLocation (point) {
      let that = this
      var geoc = new window.BMap.Geocoder()
      geoc.getLocation(point, function (rs) {
        consoles(rs)
        that.setPoint(that.marker, rs.point)
        that.setPoint(that.destination, rs.point)
        that.setDestinationAddress(rs.addressComponents)
      })
    },
    locationSuccess ({point, addressComponent, marker}) {
      consoles(addressComponent)
      this.zoom = 16
      this.setPoint(this.current, point)
      this.setPoint(this.marker, point)
      this.setPoint(this.destination, point)
      this.setDestinationAddress(addressComponent)
    }

locationSuccess is a successful callback of Baidu map positioning. The variable destinationAddress is modified by the callback of getLocation, and then an error is reported if it is modified by locationSuccess.

Uncaught TypeError: Cannot read property "Ha" of null
    at Ka.eval (eval at zZ (getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1), <anonymous>:1:556)
    at Ka.x.lang.Ca.dispatchEvent (getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1)
    at Ka.Dd (getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1)
    at Geolocation.eval (eval at zZ (getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1), <anonymous>:1:1202)
    at d (eval at zZ (getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1), <anonymous>:1:1803)
    at eval (eval at zZ (getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1), <anonymous>:1:2145)
    at window.(/anonymous function) (eval at zZ (https://api.map.baidu.com/getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1:54250), <anonymous>:1:9263)
    at ip?qt=loc&coor=bd09ll&ak=aaaaa&timeout=10000&callback=_cbk16835:1
(anonymous) @ VM151757:1
x.lang.Ca.dispatchEvent @ getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1
Dd @ getscript?v=2.0&ak=aaaaa&services=&t=20180629105709:1
(anonymous) @ VM151757:1
d @ VM151752:1
(anonymous) @ VM151752:1
window.(anonymous function) @ VM151752:1
(anonymous) @ ip?qt=loc&coor=bd09ll&ak=aaaaa&timeout=10000&callback=_cbk16835:1

locationSuccess is a successful callback of Baidu map positioning. The variable destinationAddress is modified by the callback of getLocation, and then an error is reported if it is modified by locationSuccess. I don"t know why

Vue.js javascript

Apr.02,2021

this belongs to the closure of js. These are the variables determined in the lexical scope. After the function, you can get the two functions that I want you to define. One function calls the other function, and the two functions have their own function scope, so they can't get the

of each other's variables.

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