Edit in JSFiddle

var element = document.getElementById("javascript");
element.style.color = "white";

jQuery('div').hide();
jQuery('#hello').text('こんにちは世界!');
jQuery('#fiddle').text('こんにちはfiddle!!');
jQuery('#javascrit').text('こんにちはじゃばすくりぷと!!!');
jQuery('div').fadeIn('slow');

console.log(element);

<div id='hello'>
Hello World!
</div>
<div id='fiddle'>
Hello fiddle!!
</div>
<div id='javascript'>
Hello JavaScript!!!
</div>

#hello {
  background-color: red;
}
#fiddle {
  background-color: green;
}
#javascript {
  background-color: blue;
}