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JavaScript JavaScript Basics Making Decisions in Your Code with Conditional Statements The Conditional Challenge Solution

karan Badhwar
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karan Badhwar
Web Development Techdegree Graduate 18,135 Points
Posted by karan Badhwar
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karan Badhwar
Web Development Techdegree Graduate 18,135 Points

storing access to main in a variable

How Guil stored the access into a variable is that possible?

const main = document.querySelector('main');

2 Answers

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

It's possible and quite common. After your statement, the variable "main" will be a reference to the <main> element of the document.

karan Badhwar
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karan Badhwar
Web Development Techdegree Graduate 18,135 Points
karan Badhwar
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karan Badhwar
Web Development Techdegree Graduate 18,135 Points

Hi Steven, thanks again for the reply, as it holds the reference but it does not hold the actual content and as we know variable's value can be changed, so how the code will be interpreted in the browser, but i thought it will be stored in the variable

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

If you wanted to get the content instead of the reference, you could assign this instead:

const main = document.querySelector('main').innerHTML;

Just be aware if you do that, the variable will just hold the content as a string and can't be used as a reference to the element. So this wouldn't serve the same purpose as what the variable main is being used for in the video.

karan Badhwar
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.a{fill-rule:evenodd;}techdegree seal-36
karan Badhwar
Web Development Techdegree Graduate 18,135 Points
karan Badhwar
.a{fill-rule:evenodd;}techdegree seal-36
karan Badhwar
Web Development Techdegree Graduate 18,135 Points

Okay so you mean to say with .innerHTML the variable will hold the values in it instead of the reference, as .innerHTML is used to take over the content part right, so by just giving the reference of the Structure which is here-

( const main = document.querySelector('main') )

by giving

const main = document.querySelector('main').innerHTML;

we are giving it the inner values instead? but doesn't that is the same as we just want to access the data inside even if we give the inner values if we change the value of the variable the data will be replaced?

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

If you want to use the variable to access anything later, you must assign it as in your original code example. If you want the element's HTML content, you can use the example I gave.

If you change the variable later, it doesn't matter whether it is being used for content or reference, whatever it was holding gets replaced by the new assignment.