Can I use conditional statements with EJS templates (in JMVC)?

ejs if variable exists
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and if yes, what is the syntax? My goal is to prepend an 's' to the word 'comment' when there is more than one. in an jQuery.ejs template in a JMVC app. The following breaks. I can't find any docs for conditionals...

<%=commentsNumber%> comment<% if (commentsNumber > 1) { %> s <% } %>

For others that stumble on this, you can also use ejs params/props in conditional statements:

recipes.js File:

app.get("/recipes", function(req, res) {
    res.render("recipes.ejs", {
        recipes: recipes
    });
});

recipes.ejs File:

<%if (recipes.length > 0) { %>
// Do something with more than 1 recipe
<% } %>

EJS If Else Statement (EJS Conditions), Welcome to NODE AND EJS TEMPLATE ENGINE SERIES. Today, we will talk about EJS conditions, that is the if/else statement. You should have Node.js installed in your before you can start using EJS in this article. We can use if/else conditional statement without equal sign bracket but we can’t use conditional statement with equal sign brackets. How to use Loops in Template with EJS: Now we are going to define another route, go to your server JavaScript file and define the route and inside the route function, we are going to define an object.

Conditionals work if they're structured correctly, I ran into this issue and figured it out.

For conditionals, the tag before else has to be paired with the end tag of the previous if otherwise the statements will evaluate separately and produce an error.

ERROR!

<% if(true){ %>
   <h1>foo</h1>
<% } %>
<% else{ %>
   <h1>bar</h1>
 <% } %>

Correct

<% if(true){ %>
   <h1>foo</h1>
 <% } else{ %>  
   <h1>bar</h1>
<% } %>

hope this helped.

Ejs if statement, We will use this knowledge to create our own Node JS Modules in next post. Can I use conditional statements with EJS templates (in JMVC)? Ask Question� Today, we will talk about EJS conditions, that is the if/else statement. EJS gives us the flexibility to fill it's template depending on a particular condition. FOR EXAMPLE - Let's assume you have a template for a social media of 12+ (age) users only. You can control the number of people signing up by placing a condition as seen below, Take Note!

EJS seems to behave differently depending on whether you use { } notation or not:

I have checked and the following condition is evaluated as you would expect:

<%if (3==3) {%>  TEXT PRINTED  <%}%>
<%if (3==4) {%>  TEXT NOT PRINTED  <%}%>

while this one doesn't:

<%if (3==3) %>  TEXT PRINTED  <% %>
<%if (3==4) %>  TEXT PRINTED  <% %>  

What is the proper way to check for existence of variable in an EJS , Can I use conditional statements with EJS templates (in JMVC)? to the word ' comment' when there is more than one. in an jQuery.ejs template in a JMVC app. By using our site, Can I use conditional statements with EJS templates (in JMVC)?-1. Compound if statements in ejs template. Related. 7634.

Yes , You can use conditional statement with EJS like if else , ternary operator or even switch case also

For Example

Ternary operator : <%- role == 'Admin' ? 'Super Admin' : role == 'subAdmin' ? 'Sub Admin' : role %>

Switch Case

<% switch (role) {
case 'Admin' : %>
        Super Admin
        <% break;

case 'eventAdmin' : %>
        Event Admin
        <% break;

case 'subAdmin' : %>
        Sub Admin
        <% break;

} %>

Ejs variable is not defined, When using EJS as a template language, it can be a bit of a mystery how to Can I use conditional statements with EJS templates (in JMVC , and if yes, what is� EJS is one alternative does that job well and is very easy to set up. Let's take a look at how we can create a simple application and use EJS to include repeatable parts of our site (partials) and pass data to our views. Our Test Application We will be making two pages for our application with one page with full width and the other with a sidebar.

You can also use else if syntax:

<% if (x === 1) { %>
    <p>Hello world!</p>
<% } else if (x === 2) { %>
    <p>Hi earth!</p>
<% } else { %>
    <p>Hey terra!</p>
<% } %>

Ejs if else if syntax, For example, if you have a form field that is pre-filled with data from the PM Last Post: gruntfutuk : If statement variable not defined: MTom5: 3: 1,166: Sep-03- 2018, Oct 16, 2013 � When using EJS as a template language, it can be a bit of a way to check for existence of variable in an EJS template (using ExpressJS)? 5. Join a community of over 2.6m developers to have your questions answered on Conditional Statement Client Template of UI for ASP.NET MVC Grid. New here? Start with our free trials.

EJS -- Embedded JavaScript templates, For example: 31 Jan 2014 So we can easily use for loops, if/else statements, Can I use conditional statements with EJS templates (in JMVC)? You can use� Based on the provided information I assume that the requirement is to add a template to a command. Currently the commands do not have a template property. As a workaround it is possible to iterate through the rows within the dataBound event handler and set the template of the column based on a condition.

Whats the best view engine for node.js (ejs , jade or handlebars)?, Use. Pass EJS a template string and some data. BOOM, you've got some HTML. If false then the locals will be stored in the locals object. (Implies `--strict� root Set project root for includes with an absolute path (e.g, /file.ejs). Can be array to try to resolve include from multiple directories. views An array of paths to use when resolving includes with relative paths. context Function execution context; compileDebug When false no debug instrumentation is compiled; client Returns standalone

Why Use Node.js? A Comprehensive Tutorial with Examples, I saw there is a couple of template engines for node.js I am little confused which one I should learn or use. You could make a basic one yourself using this tutorial, or you could use mine :slight_smile: conditional example unless user. Depends upon what client-side MVC framework you want use, Angular or Backbone� Any newline characters inserted in the source are part of the template literal. Using normal strings, you would have to use the following syntax in order to get multi-line strings: console.log('string text line 1 ' + 'string text line 2'); // "string text line 1 // string text line 2" Using template literals, you can do the same like this:

Comments
  • Your syntax looks right, and works for me. Are you sure that var commentsNumber exists and is an integer?
  • Yes, strange that conditionals are not mentioned in the docs!
  • Can you, in the case of an include statement, write the conditional inline? That is writing <% if (true) { include foo/bar } %> appears to error. Is there a method similar or is it necessary to break out the include by <% %>.
  • Thanks, I was searching for this answer before trying it out.
  • Thank you! I was trying to display conditional elements from changes on the server. Your answer showed me that I needed to do have evaluate everything on the client.
  • Thanks !! This stuck me for a while.
  • This was incredibly helpful as I was running into an issue where I was putting my else on a different line like the first code block you mentioned. Thanks so much for including these examples!!
  • Would you expect a single space character to do something?
  • what you need to highlight here is that the closing bracket has to most definitively be used in the same line as else/else if