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confirm function
confirm functions are used to provide the confirmation function, it first displays the given message the parameter contains information and provides two optional answers " OK " and "cancel" , then wait for the user to select one of them. If you select "OK" Returns true ; otherwise, if you select "cancel" Returns false . The syntax format of this function is as follows:
Window. Confirm (message, OK, cancel)
It has 3 Parameters. Message Is the prompt information in the string format to be displayed; Parameter OK It is also a string information used to display, it can be "OK" , Or it can be another representation OK Text Information of meaning, such "I agree" , "I like" And so on. Cancel It is also used to display string information, which can be "Cancel" Text, or other representation Cancel Meaning text information.
<SCRIPT>
VaR bln = Window. Confirm ("Are you sure you want? ");
Alert (BLN)
</SCRIPT>
Or
Button. Attributes. Add ("onclick", "javascript: If (! Confirm ('Are you sure you want to delete this system for consultation?') {Return false ;}")
Button. Attributes. Add ("onclick", "javascript: Return confirm ('Run it after login. Do you want to log on again now?')")
For example, <a onclick = "javascript: If (! Confirm ('Are you sure you want to delete the selected information? "N this operation cannot be restored! ') {Return false;} "href =" delhtml. asp? ADid = <% = RS ("ADid") %> & type_oneid = <% = RS ("type_oneid ") %> "> <font color =" green "> Delete </font> </a>
Example:
Put the following<Head> Medium
<SCRIPT>
Function rusure ()
{
Question = confirm ("Are you sure you want to enter?? ")
If (question! = "0 ")
{
Window. Open ("","Test announcement window"," Width = 340, Height = 163, toolbar = 0, status = 0, menubar = 0, resize = 0 ");
}
}
</SCRIPT>
Put the following<Body> </body>Medium
<A href = "" onclick = "rusure (); Return false;">Click me</A>
Use confirm to confirm the submission action and submit the confirmation prompt
For example, when you click rewrite in the message book, sometimes we want a prompt to avoid mistakes.CodeAs follows:
Method 1
<Input name = "Submit" type = "Submit" onclick = "If (confirm ('Open webpage? ') Location = 'HTTP: // www.05376.com' "value =" open ">
Method 2
<Input name = "reset" type = "reset" onclick = "Return clearbutton ()" value = "Override">
<SCRIPT type = "text/JavaScript">
Function clearbutton ()
{
If (! Confirm ("are you sure you want to rewrite it? ") Return false;
}
</SCRIPT>
Window. Confirm has only one parameter. The prompt box is displayed. Press OK to return true; Press Cancel to return false.
<SCRIPT>
VaR bln = Window. Confirm ("OK? ");
Alert (BLN)
</SCRIPT>
Window. Alert parameter, only one, displays the information in the warning box; no return value.
<SCRIPT>
Window. Alert ("OK. ")
</SCRIPT>
Window. Prompt parameter. There are two parameters. The first parameter displays the information in the prompt input box. The second parameter is used to display the default value of the input box. Returned value: the value entered by the user.
<SCRIPT>
VaR STR = Window. Prompt ("enter the password", "password ")
Alert (STR );
</SCRIPT>
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