((”Msg”).html (); // return the HTML content of the element node whose ID is MSG.
Certificate (registry.msg;).html ("new content");
// Write "new content" as an HTML string to the element node content with the ID of MSG. the bold new content is displayed on the page.
$ ("# MSG"). Text (); // return the text content of the element node whose ID is MSG.
$ ("# MSG"). Text ("new content");
// Write "new content" as a common text string to the element node content with the ID of MSG. The page displays the new content
$ ("# MSG"). Height (); // returns the height of the element whose ID is MSG.
$ ("# MSG"). Height ("300"); // set the height of the element whose ID is MSG to 300
$ ("# MSG"). Width (); // return the width of the element whose ID is msg
$ ("# MSG"). Width ("300"); // set the width of the element whose ID is MSG to 300
$ ("Input"). Val ("); // return the value of the input box of the form.
$ ("Input"). Val ("test"); // set the value of the form input box to test
$ ("# MSG"). Click (); // trigger the click event of an element whose ID is msg
$ ("# MSG"). Click (FN); // click an event to add a function for an element whose ID is msg
The same blur, focus, select, and submit events can all have these two call methods.