The advantages and disadvantages of utilizing various methods to visually enhance HTML elements with JavaScript

After opening one of my web projects in IntelliJ, I noticed some JavaScript hints/errors that Netbeans did not detect.

The error message was:

> Assigned expression type string is not assignable to type CSSStyleDeclaration

This error was related to this line of code:

password.style = "border: 2px solid red";

To resolve this, I directly specified the style like this:

password.style.border = "2px solid red";

Another option suggested by a commenter was:

password.setAttribute("style", "border: 2px solid red";);

My question is about the differences between these approaches. Are there any consequences or risks associated with using the first method? Is there a recommended best practice?

As far as I have tested, the first method works on all browsers I have tried. It's also worth noting the lack of detection by Netbeans for this issue.

javascripthtmlcss

Answer №1

As per information from mdn, it is advised to consider HTMLElement.style as read-only and avoid using it to set a style attribute string. Instead, IntelliJ has indicated that it should be treated as a CSSStyleDeclaration.

If you absolutely need to specify style as a string, you can achieve this by utilizing something like 

element.style.cssText = 'border: 2px solid red'
.

UPDATE: In relation to your specific query, the implication of not following this guideline is losing access to the CSSStyleDeclaration object. Using an unsupported method to set styles can lead to inconsistent outcomes or potentially broken code.

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