I hope you understand my problem.
At the moment I have a JS-function that choses randomly a div of a specific Html-Class.
Now i would like to rewrite the function that it picks one div after the other, just like they are ordered in the HTML-content.
How can I do this?
For information: the random selection is made with jquery and looks like this:
function pickrandom() {
var elems = $(".classname");
if (elems.length) {
var keep = Math.floor(Math.random() * elems.length);
console.log(keep);
$(elems[keep]).click();
}
}
Thanks
$(document).on('click', '.classname', function(){
var self = $(this);
var total_items = $('.classname').length; // 10
var index = self.index(); //2 for 3rd element
if (index < total_items) {
setTimeout(function () {
$('.classname').eq(index+1).trigger('click');
}, 3000);
}
});
this will call the next clicks in 3 sec interval
i don't know why you are using a randomizer function.you can allow the user to make that click
Hopefully this helps you - can't see your markup, but it should get you on the right track. I've also changed your .click() to a .trigger('click') which should be quite a bit more dependable.
JavaScript
function pickrandom() {
var elems = $(".classname");
if (elems.length) {
var curTarget = Math.floor(Math.random() * elems.length);
console.log(curTarget);
$(elems[curTarget]).trigger('click');
// Find index of our next target - if we've reached
// the end, go back to beginning
var nextTarget = curTarget + 1;
if( nextTarget > elems.length ) {
nextTarget = 0;
}
// Wait 3 seconds and click the next div
setTimeout( function() { $(elems[nextTarget]).trigger('click'); }, 3000 );
}
}
$("div").click(function() {
var el = $(this);
setTimeout(function() {
console.log(el.text());
el.toggleClass("click");
}, 2000);
});
var random = Math.floor((Math.random() * $("div").length) + 1);
var index = random - 1;
console.log("Random number: ", random);
var clicker = setInterval(function() {
if (index === $("div").length) {
clearInterval(clicker);
console.log("cleared interval");
} else {
$("div").eq(index).click();
index++;
}
}, 2000)
div {
height: 50px;
width: 100%;
border: 2px solid black;
background-color: lightgreen;
margin-bottom: 10px;
text-align: center;
font-size: 30px;
}
.click {
background-color: lightblue;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
Div 1
</div>
<div>
Div 2
</div>
<div>
Div 3
</div>
<div>
Div 4
</div>
<div>
Div 5
</div>
<div>
Div 6
</div>
Related
I am trying to make a variable increase every second. What should I include inside the function autoClicker, so that the variable clicks increase by 1 every second? Also, if there are any more problems in the code, could you point them out to me? Sorry if this question seems basic, I am still quite new to JavaScript.
// The variable we are trying to increase
var clicks = 0;
var upgrade1 = 1;
function getClicks() {
clicks += upgrade1;
document.getElementById("clicks").innerHTML = clicks;
};
function buyAutoClicker() {
if (clicks >= 50) {
clicks -= 50
autoClicker()
} else {
alert = "Sorry, you don't have enough clicks to buy this";
}
}
// The function I will use to increase clicks
function autoClicker() {}
You could create an AutoClicker class that has a start, pause, ad update function. It will be in charge of managing the setInterval id.
Edit: I updated it to include upgrade buttons and the target can now be manually clicked.
const upgrades = [{
cost: 50,
rate: 2
}, {
cost: 100,
rate: 4
}];
const main = () => {
const target = document.querySelector('.auto-clicker');
const span = document.querySelector('.info > span');
const btn = document.querySelector('.btn-toggle');
const clicker = new AutoClicker(target, 1000, (clicks) => {
span.textContent = clicks;
}).start();
initializeUpgrades(clicker, upgrades);
btn.addEventListener('click', (e) => {
e.target.textContent = clicker.isRunning() ? 'Start' : 'Pause';
clicker.toggle();
});
};
const initializeUpgrades = (clicker, upgrades) => {
const upgradeContainer = document.querySelector('.upgrades');
upgrades.forEach(upgrade => {
const btn = document.createElement('button');
btn.textContent = upgrade.cost;
btn.value = upgrade.rate;
btn.addEventListener('click', (e) => {
let cost = parseInt(e.target.textContent, 10);
let value = parseInt(e.target.value, 10);
if (clicker.clicks >= cost) {
clicker.clicks -= cost;
clicker.step = value
} else {
console.log(`Cannot afford the ${value} click upgrade, it costs ${cost} clicks`);
}
});
upgradeContainer.appendChild(btn);
});
};
class AutoClicker {
constructor(target, rate, callback) {
if (typeof target === 'string') {
target = document.querySelector(target);
}
this.target = target;
this.rate = rate;
this.callback = callback;
this.init();
}
init() {
this.step = 1;
this.clicks = 0;
this._loopId = null;
this.target.addEventListener('click', (e) => {
this.update();
});
}
isRunning() {
return this._loopId != null;
}
toggle() {
this.isRunning() ? this.pause() : this.start();
}
update() {
this.clicks += this.step;
if (this.callback) {
this.callback(this.clicks);
}
}
start() {
this.update(); // Update immediately
this._loopId = setInterval(() => this.update(), this.rate);
return this;
}
pause() {
clearInterval(this._loopId);
this._loopId = null;
return this;
}
}
main();
.wrapper {
width: 10em;
text-align: center;
border: thin solid grey;
padding: 0.5em;
}
.auto-clicker {
width: 4em;
height: 4em;
background: #F00;
border: none;
border-radius: 2em;
}
.auto-clicker:focus {
outline: none;
}
.auto-clicker:hover {
background: #F44;
cursor: pointer;
}
.info {
margin: 1em 0;
}
.upgrades {
display: inline-block;
}
.upgrades button {
margin-right: 0.25em;
}
<div class="wrapper">
<button class="auto-clicker"></button>
<div class="info">Clicks: <span class="clicks"></span></div>
<button class="btn-toggle">Pause</button>
<div class="upgrades"></div>
</div>
// The variable we are trying to increase
var clicks = 0;
var upgrade1 = 1;
function getClicks() {
clicks += upgrade1;
document.getElementById("clicks").innerHTML = clicks;
};
function buyAutoClicker() {
if (clicks >= 50) {
clicks -= 50
autoClicker()
} else {
alert = "Sorry, you don't have enough clicks to buy this";
}
}
// The function I will use to increase clicks
setInterval(function(){ clicks++;console.log(clicks); }, 1000);
Use setInterval to run a function at a specified interval. This will run increaseClicks every 1000 milliseconds (every second):
function increaseClicks() {
clicks++;
}
var interval = setInterval(increaseClicks, 1000);
Use clearInterval to stop running it:
clearInterval(interval);
You can omit var interval = if you don't want to use clearInterval:
setInterval(increaseClicks, 1000);
There might be several things to improve this code
the use of textContent is preferable to innerHTML, it checks if there are no html tags in the text
then using inline functions like ()=>{} are more useful but in this program it does'nt make a difference, where you to use it in object oriented context you could use it several ways
you don't need document.getElementById, you could just use id.
And finaly (this is just à random tip which has nothing to do with much of anything) you may consider branchless programming because ifs are expensive.
Stackoverflow Branchless Programming Benefits
But anyways you should have fun :)
var clicks = 0;
var upgrade1 = 1;
function getClicks() {
clk.textContent = (clicks += upgrade1);
};
function buyAutoClicker() {
if (clicks >= 50) {
clicks -= 50
setInterval(()=>{getClicks();},1000);
} else {
alert("Sorry, you don't have enough clicks to buy this");
}
}
clk.onclick=()=>{getClicks();};
b.onclick=()=>{buyAutoClicker();};
html,body{height:100%;width:100%;margin:0;}
p{height:50px;width:50px;background:red;}
<p id="clk"></p>
<p id="b"></p>
I have made custom carousel (for learning) on this web page. Carousel has 2 buttons (next and previous) and dots (each dot is 1 picture). It all works fine, but there is one problem. I want to make automatic loop carousel (to loop through images in interval of X seconds). Now i am using setInterval(nextImgShow, 2000);. But every time i click on either button (next, previous, dots) the interval changes.
Example: I have interval of 2s. If i click on a button when 1,5s has passed, the next image will only show for 0,5s. If i click it right away at 0,5s, the next image will show for 1,5s.
I already try to fix this with clearInterval();, but it does not change a thing. I also try to use clearInterval(); and than set interval again setInterval(nextImgShow, 2000); (on every button), but no luck.
I also try to use setTimeout(); but again nothing.
My wish is: If interval is 2s, when i click on either of buttons, i want to reset/set my interval back to 2s. So that every image is displayed for 2s, no matter when the button was clicked.
Can anyone help me solve this?
Below is JavaScript code and link to my web page, so you can see.
LINK: Link to page, so you can see demo
// navigation selection
const navigation = document.querySelector("ul.navigation");
const navigationToggleButton = document.querySelector(".navigation-toggle");
const navigationList = document.querySelectorAll(".navigation a");
// background image selector
const backgroundImgDiv = document.querySelector(".bg");
const previousImgBtn = document.querySelector(".prev");
const nextImgBtn = document.querySelector(".next");
const imgDotBtn = Array.from(document.querySelectorAll(".dot"));
const arrImg = ['url("img/0.jpg")', 'url("img/1.jpg")', 'url("img/2.jpg")', 'url("img/3.jpg")'];
const dot0 = document.querySelector(".dot-0");
const dot1 = document.querySelector(".dot-1");
const dot2 = document.querySelector(".dot-2");
const dot3 = document.querySelector(".dot-3");
let startImgIndex = 0;
let currentIndex = 0;
// navigation functions
function toggleNav() {
navigation.classList.toggle("active");
}
function navLink() {
navigation.classList.remove("active");
}
// background image functions
function nextImgShow() {
startImgIndex++;
if (startImgIndex === arrImg.length) {
startImgIndex = 0;
}
currentIndex = startImgIndex;
backgroundImgDiv.style.backgroundImage = arrImg[startImgIndex];
toggleDotActive(currentIndex);
}
function previousImgShow() {
startImgIndex--;
if (startImgIndex === -1) {
startImgIndex = (arrImg.length - 1);
}
currentIndex = startImgIndex;
backgroundImgDiv.style.backgroundImage = arrImg[startImgIndex];
toggleDotActive(currentIndex);
}
function dotBtnNavigate() {
if (this.classList.contains("dot-0")) {
dotBtnSet(0);
} else if (this.classList.contains("dot-1")) {
dotBtnSet(1);
} else if (this.classList.contains("dot-2")) {
dotBtnSet(2);
} else if (this.classList.contains("dot-3")) {
dotBtnSet(3);
}
}
function dotBtnSet (number) {
backgroundImgDiv.style.backgroundImage = arrImg[number];
startImgIndex = number;
currentIndex = number;
toggleDotActive(currentIndex);
}
function toggleDotActive(currentIndex) {
switch(currentIndex) {
case 0:
dot0.classList.add("dot-active");
dot1.classList.remove("dot-active");
dot2.classList.remove("dot-active");
dot3.classList.remove("dot-active");
break;
case 1:
dot0.classList.remove("dot-active");
dot1.classList.add("dot-active");
dot2.classList.remove("dot-active");
dot3.classList.remove("dot-active");
break;
case 2:
dot0.classList.remove("dot-active");
dot1.classList.remove("dot-active");
dot2.classList.add("dot-active");
dot3.classList.remove("dot-active");
break;
case 3:
dot0.classList.remove("dot-active");
dot1.classList.remove("dot-active");
dot2.classList.remove("dot-active");
dot3.classList.add("dot-active");
break;
default:
break;
}
}
// navigation events
navigationToggleButton.addEventListener("click", toggleNav);
navigationList.forEach(item => item.addEventListener("click", navLink));
// background image event
nextImgBtn.addEventListener("click", nextImgShow)
previousImgBtn.addEventListener("click", previousImgShow);
imgDotBtn.forEach(btn => btn.addEventListener("click", dotBtnNavigate));
// for touch devices (carousel navigate)
const gestureZone = document.querySelector('.img-wrap');
let touchstartX = 0;
let touchstartY = 0;
let touchendX = 0;
let touchendY = 0;
// for touch devices function (carousel navigate)
function handleGesture() {
if (touchendX <= touchstartX) {
nextImgShow();
}
if (touchendX >= touchstartX) {
previousImgShow();
}
}
setInterval(nextImgShow, 2000);
// navigation events
navigationToggleButton.addEventListener("click", toggleNav);
navigationList.forEach(item => item.addEventListener("click", navLink));
// background image event
nextImgBtn.addEventListener("click", nextImgShow);
previousImgBtn.addEventListener("click", previousImgShow);
imgDotBtn.forEach(btn => btn.addEventListener("click", dotBtnNavigate));
// for touch devices events (carousel navigate)
gestureZone.addEventListener('touchstart', function(event) {
touchstartX = event.changedTouches[0].screenX;
touchstartY = event.changedTouches[0].screenY;
}, false);
gestureZone.addEventListener('touchend', function(event) {
touchendX = event.changedTouches[0].screenX;
touchendY = event.changedTouches[0].screenY;
handleGesture();
}, false);
You should be passing the interval ID (returned from setInterval) to the clear interval function. For example:
let myIntervalID = setInterval(nextImgShow, 2000);
Then you can clear the interval doing clearInterval(myIntervalID) just make sure the variable myIntervalID is in scope when you clear it.
Your clearInterval wasn't actually clearing the interval so you ran into this problem. Once you correctly clear the interval (like above) and call the interval again (kinda like resetting the interval) your image will show for the full interval
You should assign the setInterval to a variable and use clearInterval when the user clicks on one of the buttons to change the image and then set the interval again.
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
var change;
var i = 1;
var numOfImages = 3;
$(document).ready(function(){
document.getElementById("img1").classList.add("active");
change = setInterval(function(){
changeImage();
}, 2000);
});
function changeImage(){
var elem = document.getElementById("img"+i);
elem.style.display = "none";
i++;
if(i>numOfImages){
i = 1;
}
var elemToBeShown = "#img"+i;
$(elemToBeShown).show();
}
</script>
<style>
.images{
width: 50%;
margin-left: 40%;
}
#img2{
display: none;
}
#img3{
display: none;
}
.button{
border-radius: 50%;
height: 25px;
width: 25px;
margin: 0px 15px 15px 15px;
background-color: green;
display: inline-block;
}
.button:hover{
cursor: pointer;
background-color: blue;
}
</style>
</head>
<body>
<div class="images">
<img id="img1" 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" width="125" height="125"/>
<img id="img3" src="https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRkoieaGln2U5aMZQZibEmbva3LVpVVOw-GbcizRKfmZzog4B5lnw" width="125" height="125"/>
</div>
<div style="width: 100%; text-align: center; margin-top: 25px;">
<div class="button" id="button1"></div>
<div class="button" id="button2"></div>
<div class="button" id="button3"></div>
</div>
<script>
$('.button').click(function(e){
var buttonid = $(this).attr('id');
var imgid = parseInt(buttonid.substring(6, buttonid.length), 10);
if(i!=imgid){
clearInterval(change);
document.getElementById("img"+i).style.display = "none";
document.getElementById("img"+imgid).style.display = "block";
i = imgid;
change = setInterval(function(){
changeImage();
}, 2000);
}
});
</script>
</body>
</html>
I'm trying to build a responsive menu, with a hamburger icon. I want the menu list to slide in and out, no jquery - pure javascript only.
HTML :
<div id="animation">
</div>
<button id="toggle">Toggle</button>
CSS :
div {
width: 300px;
height: 300px;
background-color: blue;
}
Javascript :
var but = document.getElementById('toggle');
var div = document.getElementById('animation');
var animate = function(type, callback){
var inter = -1, start = 100, end = 0;
if(type==true){
inter = 1;
start = 0;
end = 100;
}
var si = setInterval(function(){
console.log('maxheight');
div.style.maxHeight = (start + inter) + '%';
if(start == end){
clearInterval(si);
}
}, 10);
}
var hidden = false;
but.onclick = function(){
animate(hidden, function(){
hidden = (hidden == false) ? true : false;
});
}
div.style.maxHeight = "50%";
The problem is that proportional height in an element needs a fixed height on the parent, and you didn't provided any parent with a fixed height because for the maxHeight property too the % Defines the maximum height in % of the parent element.
You have to put your div in a parent container with a fixed height, this is your working code:
var but = document.getElementById('toggle');
var div = document.getElementById('animation');
var animate = function(type, callback) {
var inter = -1,
start = 100,
end = 0;
if (type) {
inter = 1;
start = 0;
end = 100;
}
var si = setInterval(function() {
console.log('maxheight');
div.style.maxHeight = (start + inter) + '%';
if (start == end) {
clearInterval(si);
}
}, 10);
}
var hidden = false;
but.onclick = function() {
animate(hidden, function() {
hidden = !hidden ;
});
}
div.style.maxHeight = "50%";
#animation {
width: 300px;
height: 300px;
background-color: blue;
}
#parent {
width: 500px;
height: 500px;
}
<div id="parent">
<div id="animation">
</div>
<button id="toggle">Toggle</button>
</div>
Note:
As stated in comments there are some statements in your JavaScript code that need to be adjusted:
if(type==true) can be written as if(type).
hidden = (hidden == false) ? true : false; can be shortened to hidden = !hidden
There seems to be a few errors with your code. I have fixed the js and added comments to what I have changed
var but = document.getElementById('toggle');
var div = document.getElementById('animation');
var animate = function (type, callback) {
var start = 100,
end = 0;
if (type) {
start = 0;
end = 100;
}
var si = setInterval(function () {
if (type) { // check whether to open or close animation
start++;
} else {
start--
}
div.style.maxHeight = start + '%';
if (start == end) {
clearInterval(si);
}
}, 10);
callback.call(this); // do the callback function
}
var hidden = false;
but.onclick = function () {
animate(hidden, function () {
hidden = !hidden; // set hidden to opposite
});
}
/*make sure parent container has a height set or max height won't work*/
html, body {
height:100%;
margin:0;
padding:0;
}
div {
width: 300px;
height: 300px;
background-color: blue;
}
<div id="animation"></div>
<button id="toggle">Toggle</button>
Example Fiddle
I have this code:
jQuery/JavaScript
$(document).ready(function () {
function min() {
var number = parseInt($('span').html());
return number - 30;
}
function add() {
var number = parseInt($('span').html());
return number + 31;
}
$("#container").click(function () {
$('span').text(min());
});
$("#box").click(function () {
$('span').text(add());
});
var time = parseInt($('b').html());
if (time <= 0) {
alert("AAAAA");
};
});
CSS
#container{
background: #00ff00;
width: 500px;
height:500px;
}
#box{
background: black;
width: 100px;
height:100px;
color: white;
cursor: pointer;
}
HTML
<div id="container">
<span> 60 </span>
<div id="box"> </div>
</div>
when you click on you text in change for +31 and -30 so you will got 61 because default is 60 and but if you click on text in span will change for -30 only and it will display 30 i wish to alert when text in span reach 0 i made this but didn't work.
does any one know how to fix it?
I think that I'm not understanding completely to you. Maybe this the next link can help you.
You have some errors, check the solution.
$(document).ready(function(){
var $span = $('span');
function min() {
var number = parseInt($span.html());
return number - 30;
}
function add() {
var number = parseInt($span.html());
return number + 31;
}
$("#container").click(function(){
$('span').text(min());
checkTime();
});
$("#box").click(function(){
$('span').text(add());
checkTime();
});
function checkTime() {
debugger
var time = parseInt($span.html());
if (time <= 0) {
alert("AAAAA");
};
}
});
Please next time publish your problem in JSfiddle or similar.
I think you're selector to get the span is incorrect. You also need to execute the check after you decrement the value.
$(document).ready(function(){
function min() {
var number = parseInt($('span').html());
return number - 30;
}
function add() {
var number = parseInt($('span').html());
return number + 31;
}
$("#container").click(function(){
$('span').text(min());
CheckValue();
});
$("#box").click(function(){
$('span').text(add());
});
function CheckValue() {
var val = parseInt($('#container > span').html());
if (val <= 0) {
alert("AAAAA");
}
}
);
So, i want to make game for my child. Have low experience in JS.
Scenario:
Have for example 4 square divs with blank bg. After refresh (or win) i want to:
Generate random numbers into div (1...4). And show them in them.
Then let player delete those divs by clicking on them, but in sequence how divs are numbered.
*For example after refresh divs have those numbers 2 3 1 4. So, user has to have rights to delete first div numbered 1 (2 3 _ 4) and so on.* If he clicks on 2 it get error , div stays in place, and user can try again delete right one.
It game for learning numbers. I have the begining.
Index.html
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="css.css">
<script src="http://code.jquery.com/jquery-latest.min.js"
type="text/javascript"></script>
</head>
<body>
<div class="grid">
<div id="Uleft"></div>
<div id="Uright"></div>
<div id="Dleft"></div>
<div id="Dright"></div>
</div>
<script>
$(".grid").children( "div" ).on("click", function(){
$(this).css("visibility", "hidden");
});
</script>
</body>
</html>
css.css
.grid {
margin: 0 auto;
width: 430px;
}
#Uleft, #Uright, #Dleft, #Dright {
border: 1px solid black;
width: 200px;
height: 200px;
margin: 5px;
}
#Uright {
float: right;
background-color: red;
}
#Uleft {
float: left;
background-color: blue;
}
#Dleft {
float: left;
background-color: green;
}
#Dright {
float: right;
background-color: yellow;
}
So, i guess i have use jQuery as well, but i dont know how to make it dynamic and different after refresh of page. Please help :)
http://jsfiddle.net/bNa8Z/
There are a few things you have to do. First you have to create a random array which you use sort and Math.random() to do then, you need insert the text in the squares. Find the min of the visible squares and then remove/alert depending if its the min value.
// sort by random
var rnd = [1,2,3,4].sort(function() {
return .5 - Math.random();
});
// map over each div in the grid
$('.grid div').each(function(ii, div) {
$(div).text(rnd[ii]); // set the text to the ii'th rnd
});
function minVisible() {
var min = 1e10; // a big number
$('.grid div').each(function(ii, div) {
// if not visible ignore
if ($(div).css('visibility') === "hidden" ){
return;
}
// if new min, store
var curFloatValue = parseFloat($(div).text());
console.log(curFloatValue);
if (curFloatValue < min) {
min = curFloatValue;
}
});
return min;
}
$(".grid").children( "div" ).on("click", function(){
var clickedFloatValue = parseFloat($(this).text());
if (clickedFloatValue == minVisible()) {
$(this).css("visibility", "hidden");
} else {
alert("sorry little tike");
}
});
Updated jsfiddle http://jsfiddle.net/bNa8Z/2/
Roughly this is what it would look like:
var selected = {};
$('.grid div').each(function(idx){
var is_done = false;
do{
var rand = Math.floor((Math.random()*4)+1);
if( selected[rand] == undefined ){
$(this).html(rand);
selected[rand] = 1;
is_done = true;
}
}while(!is_done);
});
alert("Start the game");
var clicked = [];
$('.grid').on('click', 'div.block', function(){
var num = $(this).html();
if( num == clicked.length + 1 ){
//alert(num + " is correct!");
clicked.push(num);
$(this).addClass("hide");
}else{
alert("Failed!");
}
if( clicked.length == 4 ){
alert("You Won!");
}
});
HTML:
<div class="grid">
<div class="block" id="Uleft"></div>
<div class="block" id="Uright"></div>
<div class="block" id="Dleft"></div>
<div class="block" id="Dright"></div>
</div>
Added CSS:
#Uleft, #Uright, #Dleft, #Dright {
position:absolute;
...
}
#Uright {
left:220px;
top:0px;
background-color: red;
}
#Uleft {
left:0px;
top:0px;
background-color: blue;
}
#Dleft {
left:0px;
top:220px;
background-color: green;
}
#Dright {
left:220px;
top:220px;
background-color: yellow;
}
.hide {
display: none;
}
See the working version at
JSFiddle
You will need to re-"run" the fiddle per game.
please try it. I think that It will help you.
var generated_random_number_sequesce = function(){
var number_array = [];
var number_string = '';
var is_true = true;
while(is_true){
var ran_num = Math.round(1 + Math.random()*3);
if(number_string.indexOf(ran_num) == -1 && ran_num < 5){
number_array[number_array.length] = ran_num;
number_string = number_string + ran_num;
if(number_array.length == 4){is_true = false;}
}
}
return number_array;
}
var set_number_on_divs = function(){
var number_array = generated_random_number_sequesce();
$(".grid").children().each(function(index, element){
$(this).attr('data-div_number' , number_array[index]);
});
}
set_number_on_divs()
var clicked = 0;
$(".grid").children( "div" ).on("click", function(){
clicked += 1;
var current_div_number = $(this).attr('data-div_number');
if( parseInt(current_div_number) == clicked){
$(this).css("visibility", "hidden");
} else{
clicked -= 1;
alert('error');
}
});