Handlebars.js - If the image_url doesn't contain "questionmark" - handlebars.js

Question

I'm learning Handlebars.js. This is my example:
const url = 'https://api.jikan.moe/anime/1/characters_staff';
fetch(url)
.then(function(response) {
if (!response.ok) {
throw Error(response.statusText);
}
// Read the response as json.
return response.json();
})
.then(function(data) {
// Do stuff with the JSON
console.log(data);
createHtml(data.staff);
})
.catch(function(error) {
console.log('Looks like there was a problem: \n', error);
});
// Handlebars function to generate the HTML
function createHtml(ourData) {
let rawTemplate = document.querySelector("#ourTemplate").innerHTML;
let compiledTemplate = Handlebars.compile(rawTemplate);
let ourGeneratedHTML = compiledTemplate(ourData);
let ourContainer = document.querySelector("#container");
ourContainer.innerHTML = ourGeneratedHTML;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/4.0.11/handlebars.min.js"></script>
<ul id="container" class="cf"></ul>
<script id="ourTemplate" type="text/x-handlebars-template">
{{#each this}}
<li class='list-container'>
<div class="image-container">
<img src="{{ image_url }}">
</div>
<div class="name-container">
{{ name }}
</div>
</li>
{{/each}}
</script>
Some of the data coming back from the API request doesn't have an image. wherever there's no image, a place holder image is shown, which has the "questionmark" in its name.
I want to achieve that the data should be shown only if the image-name doesn't contain "questionmark" in it.
Is there any way in Handlebars.js to say: Show the data only If the image_url doesn't contain "questionmark"?
Something like this?
{{#each this}}
{{#if image_url !contains "questionmark"}}
<li class='list-container'>
<div class="image-container">
<img src="{{ image_url }}">
</div>
<div class="name-container">
{{ name }}
</div>
</li>
{{/if}}
{{/each}}
Here is the same example on codepen:
Handlebars.js example

Answer 1

EDIT (for non node js use) ---------
You can define a helper to do this with this code:
Handlebars.registerHelper('regex', function (data, regex) {
return (new RegExp(regex).test(data))
})
You would then use it like this:
{{#each this}}
{{#unless (regex image_url 'questionmark')}}
<li class='list-container'>
<div class="image-container">
<a href="{{ url }}" target="_blank">
<img src="{{ image_url }}">
</a>
</div>
<div class="name-container">
{{ name }}
</div>
<div class='role-container'>{{{ role }}}</div>
</li>
{{/unless}}{{/each}}
OLD POST (for node js) -------
There's a useful library called handlebars-helpers (https://github.com/helpers/handlebars-helpers#regex) which provides some regex helpers. You could test the presence of questionmark in the image_url like this:
{{#each this}}
{{#unless (test image_url (toRegex "questionmark"))}}
<li class='list-container'>
<div class="image-container">
<img src="{{ image_url }}">
</div>
<div class="name-container">
{{ name }}
</div>
</li>
{{/unless}}
{{/each}}