Added support for getFooterData

src/bootstrap-table.js

@@ -2483,6 +2483,10 @@ class BootstrapTable {
     return data
   }
 
+  getFooterData () {
+    return this.footerData ?? []
+  }
+
   getSelections () {
     return (this.options.maintainMetaData ? this.options.data : this.data)
       .filter(row => row[this.header.stateField] === true)

src/constants/index.js

@@ -377,6 +377,7 @@ const METHODS = [
   'getOptions',
   'refreshOptions',
   'getData',
+  'getFooterData',
   'getSelections',
   'load', 'append', 'prepend',
   'remove', 'removeAll',