高亮网页中的关键字

javascript的代码如下

function HightLight(nword)
{
var oRange = document.body.createTextRange();
while(oRange.findText(nword))
{
oRange.pasteHTML("<span style='background-color:yellow'>" + oRange.text + "</span>");
oRange.moveStart('character',1);
}
}


如果在vb中使用,改进一下,

Public Sub HightLight2(nKey$, nDoc As MSHTML.HTMLDocument, Optional beforeTag$ = "", Optional afterTag$ = "")
On Error Resume Next
Dim tBody As MSHTML.HTMLBody
Dim oRange As MSHTML.IHTMLTxtRange

If beforeTag = "" Then
beforeTag = "<span style='background-color:yellow'>"
End If
If afterTag = "" Then
afterTag = "</span>"
End If

Set tBody = nDoc.body
If Not tBody Is Nothing Then
Set oRange = tBody.createTextRange
If Not oRange Is Nothing Then
While oRange.FindText(nKey)
Call oRange.pasteHTML(beforeTag & oRange.Text & afterTag)
Call oRange.MoveStart("character", 1)
Wend
End If
End If
End Sub

如果页面中有多个frame,那么还需要做些工作,我就不写了.