SVG Path manipulation

pathCommands.json

{
  "ele": {},
  "commands": [
    {
      "cmd": "M",
      "data": [
        75.6,
        35.3
      ]
    },
    {
      "cmd": "L",
      "data": [
        77.4,
        34.2
      ]
    },
    {
      "cmd": "L",
      "data": [
        100.4,
        25.8
      ]
    },
    {
      "cmd": "L",
      "data": [
        75.6,
        35.3
      ]
    },
    {
      "cmd": "Z"
    }
  ]
}

SVGPathMinipulation.js

var path = document.querySelector("path");
function getPathCommands(pathElement) {
  var data = pathElement.getAttribute("d");
  var ofs = 0;
  var indexes = data.match(/[hvmlcqtsaz]/gi).map(function(cmd, i) {
    ofs += data.substr(ofs).indexOf(cmd) + 1;
    return ofs - 1;
  });
  var commands = [];
  indexes.map(function(curr, i) {
    var raw = data.substr(
      curr,
      i < indexes.length - 1 ? indexes[i + 1] - curr : data.length
    );
    var cmd = {
      cmd: raw.substr(0, 1)
    };
    var attr = raw.substr(1, raw.length).split(/[ ,]/ig);
    if (attr.length>1) {
        attr = attr.map(function(val) {
            return parseFloat(val);
        })
        cmd["data"] = attr;
    }
    commands.push(cmd);
  });
  return {ele:pathElement, commands:commands};
}
getPathCommands(path);

test.svg