问Javascript将[对象对象]输出到textbox (适用于控制台，而不是textbox)

EN

const request = require('request');
const cheerio = require('cheerio');

var options = {
  headers: {
    'user-agent': 'request'
  }
};

function somefunction() {
  request('https://kith.com/collections/footwear/products/jbaq4160-140', options, (error, response, html) => {

    if (!error && response.statusCode == 200) {
      const $ = cheerio.load(html);

      var output = $('form[action="/cart/add"] select#productSelect > option').map((i, elem) => ({
        size: $(elem).text(),
        val: $(elem).attr('value')
      })).get().reduce((acc, cur, i, arr) => {
        arr.obj = arr.obj || {};
        arr.obj[cur.size] = cur.val;
        return arr.obj
      }, {});

      document.querySelector('#out').innerHTML = output;
      console.log(output);
      console.log('done');
    }
  });
}