1. A prompt box is displayed.
Alert ("prompt box, haha ");
2. A confirmation box is displayed.
Return confirm ("confirmation box, haha ");
IV. Other common JS
1. oncontextmenu = "window. event. returnvalue = false" will completely block the right mouse button
<Table border oncontextmenu = return (false)> <TD> NO </table>
2. <body onselectstart = "Return false"> cancel selection to prevent Replication
3. onpaste = "Return false" Do not paste
4. oncopy = "Return false;" oncut = "Return false;" Prevent Replication
5. <LINK rel = "shortcut icon" href = "favicon. ICO"> replace it with your own icon in front of the IE Address Bar
6. You can display your icons in the favorites folder.
7. Disable the Input Method
8. Always carry the framework <script language = "JavaScript"> <! -- If (window = Top) top. Location. href = "frames.htm"; // frames.htm indicates the framework webpage. // --> </SCRIPT>
9. Prevent frame <script language = JavaScript> <! -- If (top. location! = Self. Location) top. Location = self. Location; // --> </SCRIPT>
10. The webpage cannot be saved
11. <input type = button value = view web pageSource codeOnclick = "window. Location = \ 'view-Source: \ '+ \ 'HTTP: // www.csdn.net/#'">
12. How to use ASP to check whether the visitor has used an agent?
<% If request. servervariables ("http_x_forwarded_for") <> "then
Response. Write "<font color = # ff0000> after you pass the proxy server," & _ "the real IP address is" & request. servervariables ("http_x_forwarded_for") end if %>
13. Obtain the absolute position of the control
// Javascript
<Script language = "JavaScript">
Function getie (E)
{Var T = E. offsettop;
VaR L = E. offsetleft;
While (E = E. offsetparent)
{T + = E. offsettop;
L + = E. offsetleft;
}
Alert ("Top =" + T + "\ nleft =" + l );
}
</SCRIPT>
// VBScript
<Script language = "VBScript">
<! -- Function getie ()
Dim t, L, A, B
Set a = Document. All. img1
T = Document. All. img1.offsettop
L = Document. All. img1.offsetleft
While a. tagname <> "body"
Set
A = A. offsetparent
T = T + A. offsettop
L = L + A. offsetleft
Wend
Msgbox "Top =" & T & CHR (13) & "Left =" & L, 64, "Get control position"
End function -->
</SCRIPT>
14. The cursor stops at the end of the text box.
<Script language = "JavaScript">
Function CC ()
{Var E = event. srcelement;
VaR r = E. createTextRange ();
R. movestart (\ 'character \ ', E. value. Length );
R. Collapse (true );
R. Select ();}
</SCRIPT> <input type = text name = text1 value = "123" onfocus = "CC ()">
15. determine the source of the previous page
ASP: request. servervariables ("http_referer ")
Java Script: Document. referrer
16. Minimize, maximize, and close the window
<Object ID = HH1
Classid = "CLSID: ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<Param name = "command" value = "minimize">
</Object>
<Object
Id = HH2 classid = "CLSID: ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<Param name = "command" value = "maximize"> </Object>
<Object ID = hh3
Classid = "CLSID: adb880a6-d8ff-11cf-9377-00aa003b7a11">
<Param name = "command" value = "close"> </Object>
<Input type = button value = minimized onclick = hh1.click ()>
<Input type = button value = maximized onclick = hh2.click ()> <input type = button value = Disable onclick = hh3.click ()> This example applies to IE
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