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對於RSelenium和xpaths而言,雖然有些問題已經被問及有關此主題,但似乎無法使其適用於我。我正在嘗試下載名爲「隨時間變化的興趣」頁面上的第一個小部件的CSV文件。此選項沒有唯一的ID /類等,但是類「widget-actions-item」中的第三個類,其中類「widget-action-item-text」包含「CSV」。使用xpath查找嵌套div(RSelenium)
library(RSelenium)
library(wdman)
driver <- rsDriver(browser = "firefox")
remDr <- driver[["client"]]
remDr$open
remDr$navigate("http://trends.google.com/trends/explore?cat=3")
webElem1 <- remDr$findElement("class name", "widget-actions-menu")
webElem1$clickElement()
上面的代碼打開網頁和第一個小工具菜單有三個下載選項,其中之一是CSV。
webElem2 <- remDr$findElement("xpath", paste0("//div[@class='widget-actions-content']//[@class='widget-actions-item'][3]"))
webElem2$clickElement()
驅動程序找不到此元素。
<div class="widget-actions-content" ng-show="widgetActions.menuOpen" aria-hidden="false" style="">
<!----><button class="widget-actions-item" ng-if="showActionButton()" ng-click="embed()" title="Embed" track="['Widget', type, 'Embed']" ve-tracking="" jslog="39389; track:generic_click">
<span class="widget-actions-item-icon embed-image flip-rtl"></span>
<div class="widget-actions-item-text">
Embed
</div>
</button><!---->
<!----><button class="widget-actions-item" ng-if="isEditor || share" ng-click="share()" title="Share" track="['Widget', type, 'Share']" ve-tracking="" jslog="39390; track:generic_click">
<span class="widget-actions-item-icon share-image flip-rtl"></span>
<div class="widget-actions-item-text">
Share
</div>
</button><!---->
<!----><button class="widget-actions-item" ng-if="isEditor || (export && showActionButton())" ng-click="export()" title="CSV" track="['Widget', type, 'Export']" ve-tracking="" jslog="39388; track:generic_click">
<span class="widget-actions-item-icon csv-image flip-rtl"></span>
<div class="widget-actions-item-text">
CSV
</div>
</button><!---->
<help-dialog ng-show="!$root.globals.isDesktopMode && helpDialog" class="widget-actions-item ng-hide" show-annotation="true" data="helpDialog" aria-hidden="true"><button class="help-icon-button" ng-click="openDialog()" title="Help">
<i class="material-icons-extended help-icon-color">help_outline</i>
<div class="widget-actions-item-text" ng-show="showAnnotation" aria-hidden="false">
Help
</div>
</button>
</help-dialog>
</div>
顯示HTML,你要選擇 –
@VitaliyMoskalyuk編輯我的職位 – snoepdogg
更新的答案是什麼=) –