Render DOM Elements Conditionally In LWC!

In Lightning Web Components, you can conditionally render HTML using the lwc:if|elseif={property} and lwc:else directives. 

These directives are special HTML attributes that allow you to manipulate the DOM based on certain conditions.

Here are some key points to understand:

1. The lwc:if|elseif directives bind a specific {property} to the template. 

The DOM elements inside the <template> will be removed or inserted based on the truthiness or falsiness of the {property} value.

2. The legacy if:true and if:false directives are no longer recommended. 

It is advised to use the lwc:if|elseif|else directives to future-proof your code.

3. The example usage shown below clarifies the concept further:

<template>

  <template lwc:if={property1}> Statement1 </template>

  <template lwc:elseif={property2}> Statement2 </template>

  <template lwc:else> Statement3 </template>

</template>

In this example, there are two properties, property1 and property2. 

Only one of the three statements will be rendered:

- Statement1 will render if property1 is true.

- Statement2 will render if property1 is false and property2 is true.

- Statement3 will render if both property1 and property2 are false.

4. It's important to note that the lwc:elseif and lwc:else directives are optional. 

You can use them if needed, but they are not mandatory.

By understanding and utilizing these conditional rendering directives, you can dynamically display or hide DOM elements based on different scenarios, enhancing the usability and flexibility of your Lightning Web Components.