Svelte is a JavaScript framework for building user interfaces. It is known for its small size and fast performance, as it compiles code at build time rather than using runtime libraries.
Svelte has become popular in recent years for a number of reasons. One reason is its simplicity: the framework has a small learning curve and requires minimal setup, making it easy for developers to get started with it. Additionally, Svelte’s compilation step can result in smaller bundle sizes and faster performance, which is appealing for developers building web applications that need to be fast and efficient. Finally, Svelte has a growing community of developers and a rich ecosystem of tools and libraries, which makes it easier for developers to find resources and support when working with the framework
<script>
let count = 0;
function increment() {
count += 1;
}
function decrement() {
count -= 1;
}
</script>
<button on:click={decrement}>-</button>
{count}
<button on:click={increment}>+</button>
This component defines two functions, increment and decrement, which are called when the “+” and “-” buttons are clicked, respectively. The component also displays the current value of the count variable. When the user clicks the buttons, the value of count is updated and the component is automatically re-rendered to reflect the change.
Svelte also has support for more advanced features like reactive data binding, state management, and routing, but the above example should give you a sense of the basic syntax and structure of a Svelte component.
