易语言怎么提取网页中相同条件的不同文字

<ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender1" runat="server"
TargetControlID="LinkButton1"
PopupControlID="Panel1"
BackgroundCssClass="modalBackground"
DropShadow="true"
OkControlID="OkButton"
OnOkScript="onOk()"
CancelControlID="CancelButton"/>
</div>
</form>
</body>
</html>

css:
.watermark {
background: #FFAAFF;

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