如何在EJS模板中编写或条件？代码排查：仅满足第一个条件

Hey there! Let's dig into why your EJS condition only triggers for user === 0 and not user === 1. I've dealt with similar gotchas before, so let's break this down step by step:

1. Check the Type of Your user Variable #

The most common culprit here is a type mismatch. If your user value is actually a string (like "1" instead of the number 1), the strict equality operator (===) will fail because it checks both value and type.

To confirm this, add a quick debug log in your template:

<% console.log("User value:", user, "| Type:", typeof user) %>

If the output shows User value: 1 | Type: string, you have two solid fixes:

Option 1: Match the string type directly #

<% if (user === 0 || user === "1") { %>
  <div id="main_div"> My content over here </div>
<% } %>

Option 2: Convert user to a number first #

<% const userId = Number(user); %>
<% if (userId === 0 || userId === 1) { %>
  <div id="main_div"> My content over here </div>
<% } %>

2. Verify user is Being Passed Correctly #

Double-check that your backend is actually passing the value 1 to the template when you expect it. Sometimes typos in variable names or incorrect data fetching can lead to unexpected values. Add a debug line right before your condition to confirm:

<% console.log("Current user value passed to template:", user) %>

3. Test the Condition in Isolation #

To rule out any weird interactions with surrounding code, test the user === 1 condition on its own first:

<% if (user === 1) { %>
  <div> User is 1 - this should show up if the value is correct </div>
<% } %>

If this works, the issue was likely a type/value mismatch (since your original || logic looks perfectly valid).

Remember, EJS runs standard JavaScript under the hood, so any debugging tricks you use in regular JS work here too!

内容的提问来源于stack exchange，提问作者Anuja vinod