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codelibra / Leetcode timer

// ==UserScript==
// @name         Leetcode timer
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://leetcode.com/problems/*
// @match        https://leetcode.com/*
// @require      https://leetcode.com/static/jquery/dist/jquery.min.js
// @grant        none
// @license      MIT
// ==/UserScript==
$('.side-bar').hide();

$('.like-and-dislike').hide();
var $j = jQuery.noConflict();
$j(document).ready(function() {

$j('.side-bar').hide();

$j('#lc_navbar').append("<button align='center' id='timer'>Start Problem</button>");
$j( "#timer" ).click(function(){
    $('#timer').html('');
    var difficulty = $j('.question-info ul li:nth-child(5)').text();
    var diff = 30, score=0;
    if(difficulty.indexOf("Hard") !== -1) {diff = 60;score=500;}
    if(difficulty.indexOf("Medium") !== -1) {diff = 45;score=250;}
    if(difficulty.indexOf("Easy") !== -1) {diff = 25;score=100;}
    // Update the count down every 1 second
    var countDownDate = new Date(new Date().getTime() + diff*60000);

    $j('#question-detail-app').prepend("<h2 align='center' id='timer2' style='position: fixed;top: 1em;right: 1em;'> Starting Now!</h2>");
    $j('#submission-form-app').prepend("<h2 align='center' id='timer2' style='position: fixed;top: 1em;right: 1em;'> Starting Now!</h2>");
    var x = setInterval(function() {

        var now = new Date().getTime();
        var distance = countDownDate - now;
        var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
        var seconds = Math.floor((distance % (1000 * 60)) / 1000);
        if(minutes%10===0) score = score - 20;
        $j('#timer2').text(minutes + " min" );
        
        // If the count down is over, write some text
        if (distance < 0) {
            document.getElementById("timer2").innerHTML = "TIME UP!!";
        }
        $j('.list-group').hide();
        $j('.like-and-dislike').hide();
        $j('#lc_navbar').hide();

    }, 1000);

});

});