d3 replacing semicolon with comma

Let's convert my comment to an answer, so it's not left unanswered:

Assuming that your values are separated by a semicolon (so technically it's not a CSV anymore), you might want to look at this: https://github.com/d3/d3-dsv

The following code works for me :

d3.dsv(';')("your_file.csv", function(error, data){
   ...
}

d3.dsv(separator) is a contructor that returns a function that works exactly as the d3.csv function. Actually, d3.csv is equivalent to d3.dsv(',')

Just for the precision, .csv with semi-colons are default in France for example (yeah after all, it is not as if csv meant "comma-separated values"). DSV stands for delimiter-separated values and are more general.