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JavaScript JavaScript and the DOM (Retiring) Getting a Handle on the DOM Select All Elements of a Particular Type

tal Shnitzer
PLUS
tal Shnitzer
Courses Plus Student 5,242 Points
Posted by tal Shnitzer
tal Shnitzer
Courses Plus Student 5,242 Points

the const "myParagraph" is not defined on my console

const myParagraph = document.getElementsByTagName('p')

<undefined

myParagraph.length

<VM741:2 Uncaught ReferenceError: myParagraph is not defined

myParagraph[0]

<VM742:2 Uncaught ReferenceError: myParagraph is not defined

3 Answers

Steven Parker
Steven Parker
231,008 Points
Steven Parker
Steven Parker
231,008 Points

The first response is normal, the "undefined" you see there is indicating the fact that a "const" directive does not return a value.

As to the others, I tried this myself using Chrome, and got the same results. But if I use "var" instead of "const", it works. My guess is that the console commands are executed within a code block that causes anything declared with "const" or "let" to be immediately disposed. This might qualify as a bug in the console, but you may want to do a bit of research before reporting it.

Christopher Brown
Christopher Brown
4,843 Points
Christopher Brown
Christopher Brown
4,843 Points

This was helpful, thanks.