DELPHI XE8 how to use IDHTTP submit query data query button and a web page-CodePudding

ASP web page in the source code is as follows:

 & lt; Td style="width: 500 px; The font - size: 10 pt;"> 
No. & lt; Input name="txt_ph" id="txt_ph" onkeydown="if (the event, which | | event. The keyCode) {if ((event) which==13) | | (event. KeyCode==13)) {document. GetElementById (' Btn_Seach). Click (); return false; }} else {return true}; "Style=" width: 120 px;" Type="text" & gt; 
Name & lt; Input name="txt_pm" id="txt_pm" onkeydown="if (the event, which | | event. The keyCode) {if ((event) which==13) | | (event. KeyCode==13)) {document. GetElementById (' Btn_Seach). Click (); return false; }} else {return true}; "Style=" width: 120 px;" Type="text" & gt; 
Specifications & lt; Input name="txt_gg" id="txt_gg" onkeydown="if (the event, which | | event. The keyCode) {if ((event) which==13) | | (event. KeyCode==13)) {document. GetElementById (' Btn_Seach). Click (); return false; }} else {return true}; "Style=" width: 120 px;" Type="text" & gt;

Want to use IDHTTP submit queries, in number column input "20301", and then press "query" button, using DELPHI to want how to write?