# jQuery Helpers
A set of jQuery Helpers for front-end development.

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## Quick start
Place the following `<script>`s near the end of your pages, right before the closing `</body>` tag, to enable them. jQuery must come first, and then our plugins.

```
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
<script src="https://unpkg.com/jquery-helpers@1.0.4/dist/jquery.helpers.js"></script>
```

## Download
You can download ready-to-use compiled code to easily drop into your project: [Download jQuery Helpers](https://unpkg.com/jquery-helpers@1.0.4/dist/).

## Usage

### jQuery('.element').exists()
This code lets you check whether an element exists or not.

```
if ($('.element').exists()) {
  var length = $('.element').exists();
  console.log('There are ' + length + ' elements in the page.');
}
```

```
$('.element').exists(function(length) {
  console.log({
    length: length,
    content: $(this).html(), 
  });
}, function () {
  console.log('There are no selected elements in the pages.');
});
```

```
$('.element').exists(function(length) {
  console.log({
    length: length,
    content: $(this).html(), 
  });
});
```

```
$('.element').exists(null, function() {
  console.log('There are no selected elements in the pages.');
});
```

### jQuery(window).matchMedia()
This code lets you handle things differently when the window is very narrow.

```
var isMobile = $(window).matchMedia('(max-width: 767px)');

if (isMobile) {
  console.log('Mobile');
} else {
  console.log('Desktop');
}
```

```
$(window).matchMedia('(max-width: 767px)', function (matches) {
  if (matches) {
    console.log('Mobile');
  } else {
    console.log('Desktop');
  }
});
```

```
$(window).matchMedia('(max-width: 767px)', function () {
  console.log('Mobile');
}, function () {
  console.log('Desktop');
});
```