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Faith Wong
Full Stack JavaScript Techdegree Student 3,174 PointsCommands in browser JS console
Hello - with respect to the command in the video - document.getID ("myHeading").style.backgroundColor = "yellow" - two questions:
a). is it fair to say this command combines in one line what would be included separately in the JS and CSS files in a text editor?
b). is there different terminology for writing commands in the browser console? For example, I notice that in a CSS file, the background colour command would be written as background-color whereas in the console it is backgroundColor
Thank you
Faith
2 Answers
Steven Parker
229,644 PointsThis statement would work equally well in a JS file. It combines two operations using the principle known as "chaining".
As you noticed, terms in CSS that use hyphens are converted into camel case in JavaScript since the hyphens would be interpreted as operators there. This applies to all JavaScript coding and not just in the console.
Faith Wong
Full Stack JavaScript Techdegree Student 3,174 PointsThanks Steven!
Faith Wong
Full Stack JavaScript Techdegree Student 3,174 PointsFaith Wong
Full Stack JavaScript Techdegree Student 3,174 PointsThank you Steven this is helpful. I learned a new word - "camelCase"!
An additional question: with "chaining", is it theoretically possible (although probably not recommended) that a separate CSS file is not required?
Faith
Steven Parker
229,644 PointsSteven Parker
229,644 PointsDynamic CSS changes by JavaScript should not be used for simple styling, where normal CSS is a better choice. Save it for where things must change in response to events.
And normal CSS can exist in 3 different places, alone or in combination:
But "best practice" is to keep the CSS in separate files(s) to satisfy the concept of "separation of concerns" and to simply further development and maintenance.