AngularJS expression comments allow developers to add explanatory notes or reminders

When working with HTML tags that contain ng-clicks and ng-ifs in Angular, I often make function calls and pass in parameters, including literals such as true or false. However, I've noticed that it's difficult to add comments explaining what these literals mean within the expressions. Despite knowing that passing literals is not ideal, I am still curious about how to address this issue.

<button class='someclass' ng-click='somefunction(val1, val2, true /* explanation for literal */)' > </button>

Is there a way to add comments in angular expressions to clarify the purpose of literals?

javascriptangularjscomments

Answer №1

Unfortunately, comments are not able to be included in this particular code snippet. The parser interprets the forward slash (/) as a mathematical operator according to the source code. This operator expects a primary expression after it, such as something beginning with a parenthesis ((), or a bracket ([). However, there is no valid JavaScript expression that can have an asterisk (*) immediately following a forward slash (/). As a result, the parser throws an exception stating: "

Token '*' not a primary expression
."

Answer №2

Although the Angular documentation does not specifically mention that JavaScript comments are not allowed, it is safe to assume they are not supported.

Angular Expressions encompass only a portion of JavaScript functionality (along with additional features such as filters).

Answer №3

Would it be more efficient to pass these comments individually rather than combining them with other parameters? Although it may still work, it could lead to a less optimal design.

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