To pass 2D Dimensional array as an argument?
Question
When I run the below code , with data array as an local variable it was working fine. but, when I declared it as Global variable it was not working. can anybody please help me how to pass 2D dimensional array into the function.
<html>
<table>
<tr>
<select id="Ultra" name="letters" onchange="myFunction()">
<option value="0">1</option>
<option value="1">2</option>
<option value="2">3</option>
<option value="3">4</option>
</select>
</tr>
<tr>
<td id="demo">
<script>
var data = [[0,1],[1,3],[2,6]];
function myFunction(data[][])
{
var x = document.getElementById("Ultra").value;
for(i=0;i<data.length;++i)
{
if(data[i][0] == x)
{
var a = data[i][1];
}
document.getElementById("demo").innerHTML = a;
}
}
</script>
</td>
</tr>
</table>
</html>
2 answers
solution1
1 ACCPTED 2015-03-03 04:32:00
This is how to pass in a 2d array to a function. This is about as simple as I can make it. There's no need to define the type (ie don't do data[][] ) when defining the function (I think that's where you were going wrong).
// define 2d array
var data = [[0,1],[1,3],[2,6]];
// define function
function myFunction(foobar){
// ... do something with 2d array "foobar" ...
}
// invoke function, passing in 2d array
myFunction(data);
Example: Try it out using a tool like jsbin !
solution2
0 2015-03-03 04:34:38
You can just pass the variable directly. It will still be a 2D array inside the function:
function myFunction(array) {
// code
}
myFunction([[1,2],[3,4]]);
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