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JavaScript JavaScript Basics (Retired) Storing and Tracking Information with Variables Strings and Numbers

Posted by Benjamin Hedgepeth
Benjamin Hedgepeth
5,672 Points

HTML tags that are apart of string literals

For the sake of understanding document.write(), why are tags included within the quotes? Why is it that the syntax cannot be

document.write(<h1>"Title"</h1>);

3 Answers

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

The document.write function takes a single string argument with tags included.

If you move the tags outside of the quotes, they are no longer part of the string and are interpreted as JavaScript code. The angles will be considered as inequality comparison operators ("<" = "less than", ">" = "greater than"), the slash ("/") is a numeric divide operator, and "h1" will be treated as an undefined variable. Of course, this will all cause a syntax error.

James Draper
James Draper
1,172 Points
James Draper
James Draper
1,172 Points

Because you are mixing two types of code here. Everything outside of the quotes is your javascript , and as both of your "h1" tags our outside of your quotes , and as it is not defined within javascript , it will cause a syntax error.

Randy Eichelberger
Randy Eichelberger
1,491 Points
Randy Eichelberger
Randy Eichelberger
1,491 Points

Because you're putting everything within the quotation into the HTML document (usually you would select a specific id from the html file).

H1 isn't a javascript element, it is an html element. You are literally putting html into an html document when using document.write.