应该是

created() {
    const scriptTag = document.createElement('script');
    scriptTag.src = "//app-ab00.marketo.com/js/forms2/js/forms2.min.js";
    scriptTag.setAttribute('charset', 'utf-8');
    scriptTag.onload = function() {
        MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057);
    };
    document.head.appendChild(scriptTag);
}

它遇到了一个障碍，因为MktoForms2没有被定义为一个变量。

window.MktoForms2.loadForm('//app-ab00.marketo.com', '785-UHP-775', 1057)

这是我在Marketo模板中使用的一个小片段。在使用这个脚本之前，确保你已经加载了他们的forms2.min.js文件。你也可以把它 Package 在一个DOM ready/jQuery ready中。

// check if we have their forms2.min.js script available
if (window.MktoForms2) {
  // error handling
  try {
    MktoForms2.loadForm(baseUrl, munchkin_id, formId, function(form) {
      // code to execute after load form
    });
    MktoForms2.whenRendered(function(a) {
      // code to execute after the form has rendered its markup
      var fid = a.getId(); // form id
    });
  } catch (a) {
    console.log(a);
  }
}