Question

I am sending a Array from PHP encoded it to JSON and send it to a JavaScript value.
Now I wanted to split the Array on comma’s ,.
This worked fine, but when calling the very first and last string inside the array I can see a [, ] and ".

I can get the " gone, but the [ and ] seems to be a problem.

my code now:

data_array[i].replace(/["[]]/g,"");

Answer 1

If you transfer a string value like "[5,4,7,2,1]" from PHP to Javascript, you should rather JSON decode it into a native Javascript object/array.

var receivedData = "[5,4,7,2,1]";
    receivedData = JSON.parse( receivedData );

From that point on, you may just access receivedData like a normal Array

console.log( receivedData[ 2 ] );  // 7