如何使用node.js在selenium webdriver中选择下拉列表值

Question

我有以下HTML结构:

<button class="dropdown-toggle selectpicker btn btn-primary" data-toggle="dropdown" type="button" data-id="strategic_reseller_country" title="United States">
<div class="dropdown-menu open" style="max-height: 245.6px; overflow: hidden; min-height: 40px;">
<ul class="dropdown-menu inner selectpicker" role="menu" style="max-height: 243.6px; overflow-y: auto; min-height: 38px;">
<li class="" rel="0">
<a class="" style="" tabindex="0">
<span class="text"/>
<i class="glyphicon glyphicon-ok icon-ok check-mark"/>
</a>
</li>
<li rel="1">
<a class="" style="" tabindex="0">
<span class="text">Andorra</span>
<i class="glyphicon glyphicon-ok icon-ok check-mark"/>
</a>
</li>
<li rel="2">
<a class="" style="" tabindex="0">
<span class="text">United Arab Emirates</span>
<i class="glyphicon glyphicon-ok icon-ok check-mark"/>
</a>
</li>
<li rel="3">
<a class="" style="" tabindex="0">
<span class="text">Afghanistan</span>
<i class="glyphicon glyphicon-ok icon-ok check-mark"/>
</a>
</li>
<li rel="4">
<li rel="5">
<li rel="6">
<li rel="7">
<li rel="8">
<li rel="9">
<a class="" style="" tabindex="0">
<span class="text">Netherlands Antilles</span>
<i class="glyphicon glyphicon-ok icon-ok check-mark"/>
</a>
</li> 
</ul>
</div>

那怎么能从列表中得到这个项目..

我是Node.Js(JavaScript)的新手,所以我不知道如何在node.Js中实现它,但它可以在java中实现如下:

选择dropdown = new Select(driver.findElement(By.class("dropdown-menu inner selectpicker"))); dropdown.selectByVisibleText( "安道尔");

Answer 1

只需单击所需选项即可.

driver.findElement(webdriver.By.css('#mySelection > option:nth-child(4)'))
    .click();

请注意,我已将'By'更改为css选择器.我很懒,喜欢从开发人员工具中钻取选项并选择复制CSS路径(chrome)或复制唯一选择器(firefox).

Answer 2

您可以创建一个函数来选择所需的值

像这样...

driver.wait(
    until.elementLocated(By.id("continents")), 20000
).then(element => {
    selectByVisibleText(element, "Africa")
});

function selectByVisibleText(select, textDesired) {
    select.findElements(By.tagName('option'))
    .then(options => {
        options.map(option => {
            option.getText().then(text => {
                if (text == textDesired)
                    option.click();
            });
        });
    });
}

Answer 3

我会为此使用Cheerio 。

module.exports = {
    "login": function (browser) {
        var cheerio = require("cheerio")

        browser
            .url("http://www.wikipedia.org")
            .waitForElementVisible('body', 1000)
            .waitForElementVisible('select#searchLanguage', 1000)
            .source(function(result) { // .source() dump the page source in the variable
                $ = cheerio.load(result.value)
                var num_languages = $('select#searchLanguage option').length
                console.log('Wikipedia.org Languages: ' + num_languages);
            })
            .end();
    }
};

或者简单地使用.execute()命令