Javascript 使用SeleniumWebDriver和PjantomJS等待元素变为可见

我正在使用SeleniumWebDriver、phantomJS和mocha编写自动测试脚本

我的脚本文件本质上是javascript文件

我想等到一个元素（

注: 我不熟悉selenium。我需要javascript过程来解决这个问题。我不懂JAVA、Python或C#

---

有人能帮帮我吗？

它之所以不可见是有原因的，不是吗？自动化普通用户为使该元素可见所做的任何操作。有时页面的某些部分是隐藏的，因为它有多个“视图”在单个页面上。用户通常可以通过单击某些内容或填写表单在这些视图之间导航。您必须自动执行与用户相同的交互操作。

以下代码片段帮助显示元素

minorMenuXPath = "//ul[contains(@id, 'side-menu')]/li["+iMajor+"]/ul/li["+iMinor+"]/a";
//Following snippet is stated for making the driver wait till the element is visble.
driver.wait(function() 
{
   return driver.isElementPresent(By.xpath(minorMenuXPath));
}, 20*1000);
driver.findElement(By.xpath(minorMenuXPath)).then(function(elem)
{
    elem.isDisplayed().then(function(stat){
        console.log(stat);
    });
});

---

没有代码，我们无法真正帮助您；尽管从我的角度来看，您应该首先

expect（by.css（'#element'）.isVisible（））.toBe（true）

（不确定

isVisible

上是否有这样的函数），然后通过.css（'#element'）创建

。单击（）.发生在某处（）

---如果您真的需要元素可见，我想您可以将它的类更改为

显示：block

一个，然后执行expectI。我添加了一小段代码。您需要我添加整个脚本吗？不，这太酷了；我对我的注释进行了编辑，不过我会重复：您可以通过.css（“#element”）创建

）.setAttribute（'class'，'class-with-block'）；

然后使

expect

请添加HTML DOMcode@ArtjomB.你能详细说明一下吗？我必须让驱动程序元素可见。

true
true
true
true
true
true
true
false
true
false
true
false
true
false
false
true
true
true
true
true
true
true
true
true
true

<ul id="side-menu" class="nav">
    <li class="nav-header">
    <img class="logo" alt="Track Revenue" src="/images/3c4939d.png">
    <div class="logo-element"> TR </div>
    </li>
    <li class="">
    <a href="#home">
    <i class="fa fa-bolt"></i>
    <span class="nav-label">Tr Admin Menu</span>
    <span class="fa arrow"></span>
    </a>
    <ul class="nav nav-second-level collapse" aria-expanded="false" style="height: 0px;">
        <li>
        <a href="/admin/user/">All Users</a>
        </li>
        <li>
        <a href="/admin/company/">All Companies</a>
        </li>
        <li>
        <a href="/admin/device/">Devices</a>
        </li>
        <li>
        <a href="/admin/email/">Send Email</a>
        </li>
        <li>
        <a href="/admin/impersonate">Impersonate User</a>
        </li>
        <li>
        <a href="/admin/encrypttest">Test Encryption</a>
        </li>
    </ul>
    </li>
    <li class="">
    <a href="#home">
    <i class="fa fa-th-large"></i>
    <span class="nav-label">Campaigns</span>
    <span class="fa arrow"></span>
    </a>
    <ul class="nav nav-second-level collapse" aria-expanded="false" style="height: 0px;">
    <li>
    <a href="http://demotest.com.co/main/account/campaign_overview.php">Overview</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/campaign_update_cpc.php">CPC Update</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/campaign_update_subids.php">SubID Update</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/campaign_v2.php">Add Campaign</a>
        </li>
    </ul>
    </li>
    <li>
    <a href="#home">
    <i class="fa fa-bar-chart-o"></i>
    <span class="nav-label">Stats</span>
    <span class="fa arrow"></span>
    </a>
    <ul class="nav nav-second-level collapse">
        <li>
        <a href="http://demotest.com.co/main/account/stats_campaign_v2.php">Campaign Stats</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/stats_week_day_v2.php">Week / Day Parting Stats</a>
        </li>
    </ul>
    </li>
    <li>
    <a href="#home">
    <i class="fa fa-files-o"></i>
    <span class="nav-label">Reports</span>
    <span class="fa arrow"></span>
    </a>
    <ul class="nav nav-second-level collapse">
        <li>
        <a href="http://demotest.com.co/main/account/report_custom.php">Custom Data Reports</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/report_subid.php">SubID Analysis Report</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/completed_report.php">Scheduled Reports</a>
        </li>
    </ul>
    </li>
    <li>
    <a href="#home">
    <i class="fa fa-cog"></i>
    <span class="nav-label">Settings</span>
    <span class="fa arrow"></span>
    </a>
    <ul class="nav nav-second-level collapse">
        <li>
        <a href="/profile/">Account</a>
        </li>
        <li>
        <a href="/plan/">Plan Management</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/settings_groups.php">Campaign Groups</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/settings_network.php">Affiliate Networks</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/settings_sources.php">Traffic Source</a>
        </li>
        <li>
        <a href="/manage/user/">Manage Users</a>
        </li>
        <li>
        <a href="/manage/company/">Manage Company</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/settings_rules.php">Blocking & Filter Rules</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/domains.php">Domains</a>
        </li>
        <li>
        <a href="http://demotest.com.co/main/account/campaign_archive.php">Campaign Maintenance</a>
        </li>
    </ul>
    </li>
</ul>

minorMenuXPath = "//ul[contains(@id, 'side-menu')]/li["+iMajor+"]/ul/li["+iMinor+"]/a";
//Following snippet is stated for making the driver wait till the element is visble.
driver.wait(function() 
{
   return driver.isElementPresent(By.xpath(minorMenuXPath));
}, 20*1000);
driver.findElement(By.xpath(minorMenuXPath)).then(function(elem)
{
    elem.isDisplayed().then(function(stat){
        console.log(stat);
    });
});