3mcd

function getQueryParameters(str) {
  return (str || document.location.search)
    .replace(/(^\?)/, '')
    .split('&')
    .reduce(function (a, x, i) {
      var n = x.split('='), y = n[0], z = n[1];
      try { z = JSON.parse(z); } catch(e) { }
      a[y] = a[y] ? typeof a[y] == 'object' ? (a[y].push(z) && a[y]) : [a[y], z] : z;
      return a;
    }, {});

3mcd

@implementation MainViewController

- (void)viewWillAppear:(BOOL)animated
{
    // Lower screen 20px on iOS 7
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
        CGRect viewBounds = [self.view bounds];
        viewBounds.origin.y = 20;
        viewBounds.size.height = viewBounds.size.height - 20;
        self.webView.frame = viewBounds;