Question

HTML

<a onclick="loadYearPage('2018-2019')" style="cursor: pointer;">2018-2019</a>

如何使用CSS选择器定位元素onclick

我尝试了以下代码，但无法正常工作

ie.document.querySelector("[onclick='loadYearPage('2018-2019')']").Click

请建议

Answer 1

蒂姆的答案是我的偏爱，因为它很好地逃脱了。您还可以使用不同的运算符指定多个css attribute =值选择器，并组合为And语法

ie.document.querySelector("a[onclick^=loadYearPage][onclick*='2018-2019']")

如果这些子字符串中的任何一个仅在页面上出现一次，则可以减少该字符，例如

ie.document.querySelector("a[onclick*='2018-2019']")

使用您提供的页面，您确实可以使用contains修饰符（*）在onclick属性值中按部分字符串进行搜索。下面是一个可以将年份作为变量传递的示例。我已经选择了较短的选择器以提高速度。需要稍等一会儿，该元素才会出现。我使用了定时循环。

Option Explicit  
'https://www.nseindia.com/products/content/derivatives/currency/cd_historical_businessGrowth.htm
Public Sub PerformClick()
    Dim ie As InternetExplorer, t As Date, ele As Object
    Const MAX_WAIT_SEC As Long = 10
    Set ie = New InternetExplorer
    Dim yearSelection As String
    yearSelection = "2018-2019"
    With ie
        .Visible = True
        .Navigate2 "https://www.nseindia.com/products/content/derivatives/currency/cd_historical_businessGrowth.htm"

        While .Busy Or .readyState < 4: DoEvents: Wend
        t = Timer
        Do
            On Error Resume Next
            Set ele = .document.querySelector("[onclick*='" & yearSelection & "']")
            On Error GoTo 0
            If Timer - t > MAX_WAIT_SEC Then Exit Do
        Loop While ele Is Nothing
        If Not ele Is Nothing Then
            ele.Click
            While .Busy Or .readyState < 4: DoEvents: Wend
        End If
        'other code
        Stop                                     '<==Delete me later
        .Quit
    End With
End Sub

Answer 2

这有效：

 document.querySelector('a[onclick="loadYearPage(\'2018-2019\')"]')

QuerySelector中的单个邀请逗号

2 个答案: