How to format embedded if statements in JavaScript
How to format code is not really how CodeReview works ;)


You are indenting with 2 and with 4 spaces, pick one, I advocate 2
It is more common to compare _srwc to undefined itself
_srwc is an unfortunate name, it conveys no meaning
window[currentArg[0]](currentArg[1], currentArg[2], currentArg[3]); could use a comment block
Do not use console.log in production code
Also, read about apply, it allows you to call a function and pass an array of arguments so you don't have to be limited to 3 arguments.

if (_srwc !== undefined) {
  for (var i=0; i &lt; _srwc.length; i++){
    var currentArg = _srwc[i];
    if (typeof window[currentArg[0]] == 'function') {
      window[currentArg[0]](currentArg[1], currentArg[2], currentArg[3]);
    } else {
      console.log('The Setter method: "' + currentArg[0] + '" is undefined');
    }
  }
}