wang-xx
function toFix(data, val) {
  var numbers = \'\';
  for (var i = 0; i < val; i++) {
    numbers += \'0\';
  }
  var s = 1 + numbers;
  var spot = "." + numbers;
  var value = Math.round(parseFloat(data) * s) / s;
  var d = value.toString().split(".");
  if (d.length == 1) {
    value = value.toString() + spot;
  return value;
  }
  if (d.length > 1) {
    if (d[1].length < 2) {
    value = value.toString() + "0";
    }
    return value;
  }
}

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