jquery IDs with spaces

Use an attribute selector.

$("[id='content Module']").whatever();

Or, better, specify the tag as well:

$("div[id='content Module']").whatever();

Note that unlike $('#id'), this will return multiple elements if you have multiple elements with the same id within your page.

Don't use spaces, the reason for this is simple, space character is not a valid for ID attribute.

ID tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").

But if you don't care about standards try $("[id='content Module']")

Similar thread > What are valid values for the id attribute in HTML?

Edit: How id differs in between HTML 4.01 and HTML5

HTML5 gets rid of the additional restrictions on the id attribute. The only requirements left — apart from being unique in the document — are that the value must contain at least one character (can’t be empty), and that it can’t contain any space characters.

Link: http://mathiasbynens.be/notes/html5-id-class

The method Chris suggested can likely be adapted to work with jQuery functions.

var element = document.getElementById('content Module');
$(element) ... ;

An idea to try:

$("#content" +   + "Module").whatever()

$("#content" + %20 + "Module").whatever()

The semicolon may cause a javascript error. I also recommend changing the ID to not have any spaces.

Also, try document.getElementByID("content Module")

This worked for me.

document.getElementById(escape('content Module'));

Escaping any misc character on selector (along with spaces).

var escapeSelector = function(string) {
  string = string||"";
  if (typeof string !== 'string') return false;
    return string.replace( /(:|\.|\[|\]|,|=|@|\s|\(|\))/g, "\\$1" );

}
console.log($("div[data-id="+escapeSelector("Document (0).json")+"]").text());   

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div data-id="Document (0).json">Howdy</div>