I am writing a script which logs into my college network when the login page is loaded.
The code looks as follows
// ==UserScript==
// @name My Fancy New Userscript
// @namespace http://use.i.E.your.homepage/
// @version 0.1
// @description enter something useful
// @match <College login page>
// @copyright 2012+, You
// ==/UserScript==
$(document).ready(function() {
var usr=document.getElementsByName("username");
var pass = document.getElementByName("password");
usr.value="usrname";
pass.value="password";
var submitButton = document.querySelector ('input[type="submit"][value="Login"]');
var clickEvent = document.createEvent ('MouseEvents');
clickEvent.initEvent ('click', true, true);
submitButton.dispatchEvent (clickEvent);
});
The console shows a error saying
$ is not defined
有人能告诉我这是怎么回事吗？