<html>
<head>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
</body>
</html>
td {
border: 1px solid green;
width: 28px;
height: 28px;
background: #0000FF;
color: #ffffff;
}
#field {
border-spacing: 0;
border-collapse: collapse;
}
.empty {
background: #808080;
}
.end {
opacity: 0.2;
}
var dom = {};
dom.rand = function(min, max) {
if(max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
} else {
return Math.floor(Math.random() * (min + 1));
}
};
dom.trim = function(str) {
return str.replace(/^\s+|\s+$/g, '');
};
dom.hasClass = function(node, klass) {
var newClasses = (node.className).replace(/\s+/g, ' ');
return (' ' + newClasses + ' ').indexOf(' ' + klass + ' ') > -1;
};
dom.addClass = function(node, klass) {
if (!node.className) {
node.className = klass;
} else if (!this.hasClass(node, klass)) {
node.className += ' ' + klass;
}
};
dom.removeClass = function(node, klass) {
if (node.className && dom.hasClass(node, klass)) {
var newClasses = node.className.replace(new RegExp('(\\s+|^)' + klass + '(\\s+|$)', 'g'), ' ');
node.className = this.trim(newClasses);
}
};
dom.toggleClass = function(node, klass) {
if (dom.hasClass(node, klass)) {
dom.removeClass(node, klass);
} else {
dom.addClass(node, klass);
}
};
dom.addEvent = function(elem, type, handler) {
if (document.addEventListener) {
elem.addEventListener(type, handler, false);
} else {
elem.attachEvent("on" + type, handler);
}
};
dom.preventBrowserEvent = function(e) {
if (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
};
dom.isRegionButton = function(e) {
if (e.which) {
return e.which == 2;
} else {
return e.button == 2;
}
};
function Cell(x, y, td) {
this.td = td;
this.isOpened = false;
this.isMined = false;
this.isMarked = false;
this.x = x;
this.y = y;
}
Cell.prototype.toggleFlag = function() {
if (this.isMarked) {
this.td.innerHTML = '⚑';
this.isMarked = false;
} else {
this.td.innerHTML = '';
this.isMarked = true;
}
};
Cell.prototype.drawMine = function() {
this.td.innerHTML = '☢';
};
Cell.prototype.drawEmptyCell = function() {
this.isOpened = true;
dom.addClass(this.td, 'empty');
};
Cell.prototype.drawNumber = function(number) {
this.isOpened = true;
this.td.innerHTML = number;
};
Cell.prototype.setMine = function() {
this.isMined = true;
};
Cell.prototype.hasMine = function() {
return this.isMined;
};
Cell.prototype.getX = function() {
return this.x;
};
Cell.prototype.getY = function() {
return this.y;
};
function Field(width, height, mines) {
this.table = document.createElement('table');
this.width = width;
this.height = height;
this.mines = mines;
this.cells = [];
this.createField();
this.rightClickListener();
this.clickListener();
this.generateMines();
}
Field.prototype.createField = function() {
this.table.id = 'field';
document.body.appendChild(this.table);
var row, y, x;
for (y = 0; y < this.height; y++) {
row = this.table.insertRow(y);
this.cells[y] = [];
for (x = 0; x < this.width; x++) {
this.cells[y].push(new Cell(x, y, row.insertCell(x)));
}
}
};
Field.prototype.rightClickListener = function() {
var self = this;
dom.addEvent(this.table, 'mousedown', function(e) {
var target = e && e.target || event.srcElement,
cell = self.cells[target.parentNode.rowIndex][target.cellIndex];
if (target.tagName == 'TD' && cell.isMarked && dom.isRegionButton(e)) {
cell.toggleFlag();
}
dom.preventBrowserEvent(e);
});
};
Field.prototype.clickListener = function() {
var self = this;
dom.addEvent(this.table, 'click', function(e) {
var target = e && e.target || event.srcElement;
if (target.tagName != 'TD') {
return false;
}
self.openCell(target.cellIndex, target.parentNode.rowIndex);
dom.preventBrowserEvent(e);
});
};
Field.prototype.generateMines = function(table) {
var randRow, randCell, i, mineCount = 0;
while(mineCount < this.mines) {
randRow = dom.rand(0, this.height - 1);
randCell = dom.rand(0, this.width - 1);
if (this.cells[randRow][randCell].hasMine()) {
continue;
} else {
mineCount++;
this.cells[randRow][randCell].setMine();
}
}
};
Field.prototype.openCell = function(x, y) {
var cell = this.cells[y][x];
var numberAroundMines = this.getNumberAroundMines(cell);
if (cell.hasMine()) {
this.gameOver();
cell.drawMine(x, y);
} else if (numberAroundMines !== 0){
cell.drawNumber(numberAroundMines);
return;
} else if (numberAroundMines === 0) {
cell.drawEmptyCell();
var aroundCells = this.getAroundCells(x, y);
if (!cell.isOpened) {
for (var l = 0; l < aroundCells.length; l++) {
this.openCell(aroundCells[l].getX(), aroundCells[l].getY());
}
}
}
};
Field.prototype.getNumberAroundMines = function(cell) {
var cellIndex = cell.getX();
var rowIndex = cell.getY();
var aroundMines = [];
for (var j = rowIndex - 1; j <= rowIndex + 1; j++) {
for (var k = cellIndex - 1; k <= cellIndex + 1; k++) {
if (!this.cellExist(k, j)) {
continue;
}
if (this.cells[j][k].isMined) {
aroundMines.push(this.cells[j][k]);
}
}
}
return aroundMines.length;
};
Field.prototype.cellExist = function(x, y) {
if (x > this.width - 1 || x < 0 || y < 0 || y > this.height - 1) {
return false;
} else {
return true;
}
};
Field.prototype.getAroundCells = function(x, y) {
var cellIndex = x;
var rowIndex = y;
var aroundCells = [];
for (var j = rowIndex - 1; j <= rowIndex + 1; j++) {
if (rowIndex === undefined) {
continue;
}
for (var k = cellIndex - 1; k <= cellIndex + 1; k++) {
if (!this.cellExist(k, j)) {
continue;
}
if (k == x && j == y) {
continue;
}
aroundCells.push(this.cells[j][k]);
}
}
return aroundCells;
};
Field.prototype.gameOver = function() {
dom.addClass(this.table, 'end');
};
function Game(width, height, mines) {
this.field = new Field(width, height, mines);
}
var game = new Game(9, 9, 10);
Output
You can jump to the latest bin by adding /latest
to your URL
Keyboard Shortcuts
Shortcut | Action |
---|---|
ctrl + [num] | Toggle nth panel |
ctrl + 0 | Close focused panel |
ctrl + enter | Re-render output. If console visible: run JS in console |
Ctrl + l | Clear the console |
ctrl + / | Toggle comment on selected lines |
ctrl + ] | Indents selected lines |
ctrl + [ | Unindents selected lines |
tab | Code complete & Emmet expand |
ctrl + shift + L | Beautify code in active panel |
ctrl + s | Save & lock current Bin from further changes |
ctrl + shift + s | Open the share options |
ctrl + y | Archive Bin |
Complete list of JS Bin shortcuts |
JS Bin URLs
URL | Action |
---|---|
/ | Show the full rendered output. This content will update in real time as it's updated from the /edit url. |
/edit | Edit the current bin |
/watch | Follow a Code Casting session |
/embed | Create an embeddable version of the bin |
/latest | Load the very latest bin (/latest goes in place of the revision) |
/[username]/last | View the last edited bin for this user |
/[username]/last/edit | Edit the last edited bin for this user |
/[username]/last/watch | Follow the Code Casting session for the latest bin for this user |
/quiet | Remove analytics and edit button from rendered output |
.js | Load only the JavaScript for a bin |
.css | Load only the CSS for a bin |
Except for username prefixed urls, the url may start with http://jsbin.com/abc and the url fragments can be added to the url to view it differently. |