不能设置在函数未定义离子的特性

Question

错误：无法设置的未定义的属性X2在函数中使用

  x2 : string;
  const provider = new OpenStreetMapProvider();
  const results = provider.search({query : this.city}).then( function(e){
    console.log("function(e)",e[0]);
    this.x2=e[0].x;
  });

Answer 1

好

x2 : string;
const provider = new OpenStreetMapProvider();
const results = provider.search({query : this.city}));

results.then( (e) => {
  console.log("function(e)",e[0]);
  this.x2=e[0].x;
}