Selenium executeScript没有返回List <webelements> </webelements>

Question

Selenium executeScript没有返回List。以下代码尝试将某些内容写入电子邮件的主题字段，将其另存为草稿，然后通过搜索字段搜索草稿。

    ((JavascriptExecutor) driver).executeScript("document.getElementById('NewMessage').click();");
    Thread.sleep(4000);
    ((JavascriptExecutor) driver).executeScript("document.getElementById('fSubject').value = \""+ test +"\" ;");
    ((JavascriptExecutor) driver).executeScript("document.getElementById('SaveDraft').click();");
    Thread.sleep(2000);
    ((JavascriptExecutor) driver).executeScript("document.getElementById('c_clogot').click();");
    ((JavascriptExecutor) driver).executeScript(
              "var f = new FocusEvent('focus');"
            + "var m = new MouseEvent('click');"
            + "var q = document.getElementsByName('query')[0];"
            + "var b = document.getElementsByClassName('c_search_go c_search_psb_go')[0];"
            + "q.dispatchEvent(f);"
            + "q.dispatchEvent(m);"
            + "q.value =  \""+ test +"\" ;"
            + "b.dispatchEvent(m);");
    Thread.sleep(2000);

以下javascript使用类＆＃39; Fmd＆＃39;获取所有元素，但JavaScriptExecutor未返回WebElements列表。

    String scriptToExec = "return document.getElementsByClassName('FmD');";
    List<WebElement> resultsList = (List<WebElement>) ((JavascriptExecutor) driver)
            .executeScript(scriptToExec);