模式对话框传递对象（The modal dialog box passes the object）.docVIP

模式对话框传递对象（The modal dialog box passes the object） As we know, dialog boxes are generally divided into two types: modal type (modal) and modeless type (modeless). Modal dialog box is the dialog box where the users mouse focus or the input cursor will remain on it until a valid closing method is taken. Modeless dialogs do not enforce this feature, and users can switch between the current dialog box and other windows. This article describes how to use the JavaScript language to create the two types of dialog box, control its size and location, change its appearance, and data transfer between dialog boxes. In all of the routines in this article, 2 HTML pages are involved at the hierarchy. We call the first page the caller page, and the second page is called the callee page. That is, execute code creation on the caller page to generate the callee page. Create modal and modeless dialogs First of all, lets take an example to get a quick idea of what is modal and modeless. In caller.htm, we enter the following code: INPUT TYPE=, button, value=, create modal dialog box, onclick=, fnOpenModal () brbr INPUT TYPE=, button, value=, create modeless dialog box, onclick=, fnOpenModeless () script language= JavaScript Function, fnOpenModal () { Window.showModalDialog (callee.htm) } Function, fnOpenModeless () { Window.showModelessDialog (callee.htm) } /script When you open caller.htm in the browser and click the create modal dialog box button, a dialog box window appears, in which the content is callee.htm. Youll see that, in addition to closing this new window, we cant set any other window as the current active window anyway. The window type that has been active is the modal type. Close the modal dialog box, return to the caller.htm page, and click the create modeless dialog box. A dialog window containing the callee.htm page appears. This time its different. The mouse can move somewhere else to make the other window a current activity state, which is a modeless concept. Next, l