Apr 23, 2010 · You're missing a declaration of the Page_IsValid variable. I'm guessing that it's a local variable set inside of Page_ClientValidate, which isn't in scope in this function? You should probably …

Jun 26, 2023 · To fix the JavaScript expected error, it’s important to understand why it happens. This error occurs when the code expects to find a specific value or expression but instead encounters …

Learn how to troubleshoot and fix the 'Expression Expected' error in your code with expert tips and examples.

Aug 26, 2022 · Just started learning javascript - may i enquire why does the following code end up having the if highlighted (of which when i hover over it at vscode it says 'expression expected'?

Jul 20, 2025 · Never fear — this article aims to save you from tearing your hair out over such problems by providing you with some tips on how to find and fix errors in JavaScript programs.

Oct 19, 2025 · In this blog post, we will delve into the fundamental concepts behind the Expression expected error, explore its usage scenarios, common practices, and best practices to help you …

May 31, 2023 · This error message indicates that the JavaScript interpreter expected to find an expression in your code but instead found something else. This article already discussed what this …

May 30, 2019 · expressions, as used in the original question, are actually "valid" JSX/JS syntax if you're using the babel syntax/plugin that supports the expression proposal.

Jul 8, 2025 · An expression statement is an expression used in a place where a statement is expected. The expression is evaluated and its result is discarded — therefore, it makes sense only for …

May 26, 2017 · I had the error expression expected reported by Webstorm when editing a Node.js program. In this case the solution is to set the language version to a version that supports this feature.