Reputation: 352
how to assign random values from array to table cell on a button click
I want to implement the code to create a bingo appliacation where it takes the letters from array on a button click.
How can i assign the array element like array(a,b,c) to those 3X3 table cells randomly on run button click. when i got sequence like abc in a row or diagonal i want increment the count value.
I started but i am unable to implement the code. Can i get any suggestion please.
Here is my code
<html>
<head>
<script>
function run(){
var grid = document.getElementById("grid");
for (var i = 0, row; row = grid.rows[i]; i++){
row.cells[0].textContent = rand();
row.cells[1].textContent = rand();
row.cells[2].textContent = rand();
}
score()
}
function rand(){
var text = new Array();
var possible = "MCS*";
return possible.charAt(Math.floor(Math.random() * possible.length));
}
function score(){
var Row = document.getElementById("grid");
var Cells = Row.getElementsByTagName("td");
alert(Cells[0].innerText);
alert(Cells[1].innerText);
alert(Cells[2].innerText);
alert(Cells[3].innerText);
alert(Cells[5].innerText);
alert(Cells[6].innerText);
alert(Cells[7].innerText);
alert(Cells[8].innerText);
}
</script>
</head>
<body>
<form metdod="post">
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" width="100"v id="grid">
<tr>
<td id="1-1" height="19" width="20%"> </td>
<td id="1-2" height="19" width="20%"> </td>
<td id="1-3" height="19" width="20%"> </td>
</tr>
<tr>
<td id="2-1" height="16" width="20%"> </td>
<td id="2-2" height="16" width="20%"> </td>
<td id="2-3" height="16" width="20%"> </td>
</tr>
<tr>
<td id="3-1" height="19" width="20%"> </td>
<td id="3-2" height="19" width="20%"> </td>
<td id="3-3" height="19" width="20%"> </td>
</tr>
</table>
<br><br>
<input type="button" onClick="return run();" value="run">
</form>
</body>
</html>
Thanks in advance..
Upvotes: 4
Views: 1926
Answers (3)
Reputation: 34168
Well this is NOT bingo but your "assign random letter a,b,c to a space in a grid" can be satisfied by:
var bingocol = ["a", "b", "c"];
/**
* Returns a random integer between min (inclusive) and max (inclusive)
* Using Math.round() will give you a non-uniform distribution!
*/
function getRandomIntInclusive(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
$('#runbingo').on("click", function() {
var nextcolindex = getRandomIntInclusive(0, 2);
var nextletterindex = getRandomIntInclusive(0, 2);
var nextrow = getRandomIntInclusive(0, 2);
$('#grid').find('tr').eq(nextrow).find('td').eq(nextcolindex).html(bingocol[nextletterindex]);
});
NOW if you really want to emulate BINGO where the column varies and the NUMBERS in the column vary by a given sequence that is a different problem; note that you would then need to have one algorithm to assign the player cards and another to pick random values from a list for the "game" card both of which would need to consider the range and previously filled values to exclude duplicates - doable but an entirely different problem.
Here is the code above in action: https://jsfiddle.net/MarkSchultheiss/tjd7j3oh/
Upvotes: 0
Reputation: 179
<html>
<head>
<script>
var arr_num = ["1","2","3"];
var match =["123","234","345","567","678","111","222","333","444","555","666"];
function run(){
var counter =0;
var grid = document.getElementById("grid");
for (var i = 0, row; row = grid.rows[i]; i++){
row.cells[0].textContent = arr_num[getRandom()];
row.cells[1].textContent = arr_num[getRandom()];
row.cells[2].textContent = arr_num[getRandom()];
}
var a = getMatch();
for(var i=0;i<getMatch().length; i++){
if(match.indexOf(a[i]) > -1)
counter++;
}
document.getElementById("count").innerHTML = counter++;
}
function getMatch(){
var grid = document.getElementById("grid");
var match1 = [[]];
var match_dia =[];
var temp_dia1 = 0;
var temp_dia2 = 2;
var temp_dia3 = 0;
var temp_dia4 = 2;
var match_col = [];
for (var i = 0, row; row = grid.rows[i]; i++){
match1[match1.length++] = row.cells[0].textContent+row.cells[1].textContent+row.cells[2].textContent;
match1[match1.length++] = row.cells[2].textContent+row.cells[1].textContent+row.cells[0].textContent;
if(match_col.length != 0){
match_col[0] = match_col[0]+row.cells[0].textContent;
match_col[1] = match_col[1]+row.cells[1].textContent;
match_col[2] = match_col[2]+row.cells[2].textContent;
match_col[3] = row.cells[0].textContent+match_col[3];
match_col[4] = row.cells[1].textContent+match_col[4];
match_col[5] = row.cells[2].textContent+match_col[5];
}else{
match_col[0] = row.cells[0].textContent;
match_col[1] = row.cells[1].textContent;
match_col[2] = row.cells[2].textContent;
match_col[3] = row.cells[0].textContent;
match_col[4] = row.cells[1].textContent;
match_col[5] = row.cells[2].textContent;
}
if(match_dia.length != 0){
match_dia[0] = match_dia[0]+row.cells[temp_dia1++].textContent;
match_dia[1] = match_dia[1]+row.cells[temp_dia2--].textContent;
match_dia[2] = row.cells[temp_dia3++].textContent+match_dia[2];
match_dia[3] = row.cells[temp_dia4--].textContent+match_dia[3];
}else{
match_dia[0] = row.cells[temp_dia1++].textContent;
match_dia[1] = row.cells[temp_dia2--].textContent;
match_dia[2] = row.cells[temp_dia3++].textContent;
match_dia[3] = row.cells[temp_dia4--].textContent;
}
}
for(var i=0;i<match_col.length;i++){
match1[match1.length++] = match_col[i];
}
match1[match1.length++] = match_dia[0];
match1[match1.length++] = match_dia[1];
return match1;
}
function getRandom(){
return Math.floor(Math.random() * arr_num.length) + 0 ;
}
</script>
</head>
<body>
<form metdod="post">
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" width="100"v id="grid">
<tr>
<td id="1-1" height="19" width="20%"> </td>
<td id="1-2" height="19" width="20%"> </td>
<td id="1-3" height="19" width="20%"> </td>
</tr>
<tr>
<td id="2-1" height="16" width="20%"> </td>
<td id="2-2" height="16" width="20%"> </td>
<td id="2-3" height="16" width="20%"> </td>
</tr>
<tr>
<td id="3-1" height="19" width="20%"> </td>
<td id="3-2" height="19" width="20%"> </td>
<td id="3-3" height="19" width="20%"> </td>
</tr>
</table>
<br><br>
<div id="count" name="count"></div>
<br><br>
<input type="button" onClick="return run();" value="run">
</form>
</body>
</html>
Upvotes: 1
Reputation: 557
This is how you would assign a value to each cell:
for(var row = 1; row <= 3; row++) {
for(var col = 1; col <= 3; col++ {
var id = '#'+ row + "-" + col;
$(id).html(/* put some content here */);
}
}
To assign a random number see Math.random(). If you multiply that value with 10 and round it down, you will get an integer between 0 and 9. Use that value to pick an element from your array.
Edit
So if you have an array like letters = [ "A", "B", "CD", "asum", 12, "whatsoever" ]and a random number n then letters[n] will give you the array element with index n. For n == 2: letters[n] == "CD"
Upvotes: 1
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