How to call the method method in filter in vue component

how does the following filters call padDate in method and pass a value?
filters: {

    formatDate: function(value) {
        let _this = this;
        let date = new Date(value);
        let year = date.getFullYear();
        let month = padDate(date.getMonth()+1);
        let day = padDate(date.getDate());
        let hour = padDate(date.getHours());
        let minutes = padDate(date.getMinutes());
        let seconds = padDate(date.getSeconds());
        return year +"-"+month +"-"+day+""+hour+":"+minutes+":"+seconds;
    }

},
methods: {

  padDate(value){
      return value <10?"0"+value :value;
  }

}

Vue.js
Apr.09,2021

this.padDate (xx) access

what to do at last

when writing functions, use formatDate: (vaule) = > {/ * code*/} to pass this, and then use this.padDate (v) should be feasible

filters this is window, The context is not vue

var _ this = window.vm

{{ this | filterMsg}
passes this into filter as a parameter, so you can access the methods defined in methods.

is written directly in methods, how about calling it directly in the view? 

methods: {
    formatDate(value){
        padDate(value)
    }
<view>{{formate(date)}}</view>

Previous: Does the PUT method in the REST architecture have to pass the entire modified JSON object?

Next: Echarts is used to draw a line chart in vue, why the data is not displayed?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1beeccb-31c33.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1beeccb-31c33.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?