Echoing data with {{ }} in Laravel - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What is the output of this Blade template?

Consider the following Blade template snippet:

<p>Hello, {{ $name }}!</p>

If the variable $name is set to "Alice", what will be rendered in the browser?

Laravel

<p>Hello, {{ $name }}!</p>

A <p>Hello, $name!</p>

B <p>Hello, {{ $name }}!</p>

C <p>Hello, </p>

D <p>Hello, Alice!</p>

💡 Hint

Remember that {{ }} in Blade templates outputs the value of the variable.

The Blade syntax {{ $name }} outputs the value of the variable $name, which is 'Alice'. So the rendered HTML will be

Hello, Alice!

.

📝 Syntax

intermediate

Which Blade syntax correctly escapes HTML?

Given the variable $content contains the string <script>alert('Hi')</script>, which Blade syntax will safely display the string as text without running the script?

A @{{ $content }}

B {!! $content !!}

C {{ $content }}

D {{{ $content }}}

💡 Hint

Blade's {{ }} syntax escapes HTML by default.

Using {{ $content }} escapes HTML tags, so the script tags will be shown as text, preventing script execution. {!! $content !!} outputs raw HTML, which is unsafe here.

🔧 Debug

advanced

Why does this Blade template show raw PHP code instead of output?

This Blade template code:

<p>User: {{ $user->name }}</p>

renders as:

<p>User: {{ $user->name }}</p>

What is the most likely cause?

Laravel

<p>User: {{ $user->name }}</p>

A The Blade template file is saved with a .php extension instead of .blade.php

B The $user variable is null

C The $user->name property is empty string

D The Blade compiler cache is corrupted

💡 Hint

Blade templates must have the correct file extension to be compiled.

If the file is not named with .blade.php extension, Laravel will not compile Blade syntax and will output it as plain text.

❓ state_output

advanced

What is the output when a variable is not set in Blade?

Given this Blade snippet:

<p>Status: {{ $status }}</p>

and the variable $status is not passed to the view, what will be the rendered output?

Laravel

<p>Status: {{ $status }}</p>

A <p>Status: null</p>

B <p>Status: </p>

C An error is thrown about undefined variable

D <p>Status: {{ $status }}</p>

💡 Hint

Blade treats undefined variables as empty strings when echoing.

Blade outputs an empty string for undefined variables inside {{ }}, so the output is

Status:

without error.

🧠 Conceptual

expert

Which Blade syntax prevents XSS by escaping output?

You want to display user input safely in a Blade template to prevent Cross-Site Scripting (XSS). Which syntax should you use?

A {{ $userInput }}

B {!! $userInput !!}

C @php echo $userInput; @endphp

D <script>{{ $userInput }}</script>

💡 Hint

Blade's double curly braces escape HTML by default.

Using {{ $userInput }} escapes HTML special characters, preventing scripts from running. {!! !!} outputs raw HTML, which is unsafe for user input.