How can I access a JavaScript object which has spaces in the object's key?

Use ECMAscripts "bracket notation":

myTextOptions[ 'character names' ].kid;

You can use that notation either way, reading & writting.

For more information read out here:

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects

Properties of JavaScript objects can also be accessed or set using a bracket notation (for more details see property accessors). Objects are sometimes called associative arrays since each property is associated with a string value that can be used to access it. So, for example, you could access the properties of the myCar object as follows:

myCar['make'] = 'Ford';
myCar['model'] = 'Mustang';
myCar['year'] = 1969;

For more, read on at Working with JS Objects.

So in your case it's myTextOptions['character names'].kid;

We can also do this by -

myTextOptions[ 'character names' ]['kid'];

This is useful when we have consecutive keys which consist of space.