Handlebarsjs check if a string is equal to a value

Question

Is it possible in Handlebars to check if a string is equal to another value without registering a helper? I can\'t seem to find anything relevant to this in the Handlebars r

Answer 1

You cannot directly compare the strings in handlebars and you have to use a helper. I tried the above solutions with my Koa app and couldn't register the helper. The below code worked for me and i think this should work for express apps as well. I hope this helps someone.

Code in server.js

var handlebars = require('koa-handlebars');

const isEqualHelperHandlerbar = function(a, b, opts) {
            if (a == b) {
                return opts.fn(this) 
            } else { 
                return opts.inverse(this) 
            } 
        }
        
app.use(handlebars({
    viewsDir: './app/views',
    layoutsDir: './app/views/layouts',
    defaultLayout: 'main',
    helpers : {
        if_equal : isEqualHelperHandlerbar
    }
}));

Code in HBS file where fruit is the variable to be compared:

 <select id={{fruit}}>
   <option >Choose...</option>
   <option value="apple" {{#if_equal fruit "apple"}} selected {{/if_equal}}>Apple</option>
   <option value="mango" {{#if_equal fruit "mango"}} selected {{/if_equal}} >Mango</option>
 </select>