Question

我想从html中获取一些文本并将其显示在文本框中，但是带有文本的元素没有id或名称。

在以下示例中，我希望“100001063622219”显示在文本框中。

<div class="container" style="max-width: 600px;">
<div id="success-wrap">
    <h1>Success!</h1>
    <p class="lead">
        Your Facebook personal numeric ID is:<br />
    </p>
    <code>100001063622219</code>
    <p>
        <a href="/" class="btn btn-primary">Find another &rarr;</a>
    </p>
</div>

Answer 1

您可以使用getElementsByTagName()：

//get the value of the first <code> tag in #success-wrap
    var code = document.getElementById("success-wrap").getElementsByTagName("code")[0]
    var str = code.innerHTML;
//put that string into #my-input input    
    document.getElementById("my-input").value = str;
//remove the original string in the <code> blocks
    code.parentNode.removeChild(code);

http://jsfiddle.net/joe_young/L0fbcn72/

Answer 2

您可以使用Regular Expression在html标记之间获取文字（即<code></code>。

这是代码示例。

Imports System.Text.RegularExpressions

 Function RegexTagGet(ByVal Input As String, ByVal TagName As String) As String
    Input = Regex.Match(Input, "<" & TagName & ">" & "[^\1]*?" & "</" & TagName & ">", RegexOptions.IgnoreCase).Value
    Input = Replace(Input, "<" & TagName & ">", "")
    Input = Replace(Input, "</" & TagName & ">", "")
    Return Input
End Function

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click

     Dim html_source As String = "<code>100001063622219</code>"
     MsgBox(RegexTagGet(html_source, "code"))

End Sub

从没有id，名称或类的html获取文本

2 个答案: