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Svelte
19 posts
Svelte – How to upload a file?
In order to upload in file in Svelte, we can use javascript FormData() api. First we will create a form with file input field and append the value to the…
Svelte – Calling parent function from child and child function from parent
In previous article we learned about props and how to declare function props and read only props. In this article we will learn how to call parent function from child…
Svelte – Learn props, set default value & pass as object in component
In javascript frameworks, props is an important concept. Without them it’s not easy to pass data from one component to another. So, the primary use of props is to pass…
Svelte Error – Variable is not updating on UI after changes
As we learned in our previous article that variables are reactive in nature. It means they update the UI with changes in their values. But this statement is half correct.…
Svelte – Reactive variables and statements ($:)
Variable assignment in Svelte is reactive in nature. It means if the new value is assigned to a variable then the change will be immediately reflected to the UI. But…
Svelte – Creating multiple components and adding CSS styles
In this article we will learn how to create multiple components in Svelte and import them. We will also see how to declare css styles and learn about their behavior…
Svelte: Using Javascript variables for displaying data / attributes in html
In this article we will learn an important concept which is the foundation for props in Svelte. Javascript variables are reactive in Svelte. It means that if you update the…
Initialize store with localstorage data in Svelte
In this article we will quickly learn how to initialize svelte store with localstorage data. All modern browsers have localstorage facility which is used to store data client side. First…
Svelte Error – Cannot access ‘variable_name’ before initialization
Svelte throws error, “Cannot access variable_name before initialization” when a reactive variable is used in non-reactive variable. According to Svelte documentation – Reactive statements run immediately before the component updates,…
How to dynamically import components in Svelte?
There are situations when we do not want to import components statically into our project. This could be useful for performance reasons. In this article we will quickly learn howy…
How to loop each block x times in Svelte?
In Svelte when we run each loop we generally do it over an array of items. So, each iteration will provide single item. But there might be situations when we…
How to start coding in Svelte? Clean project & write first code
When we install Svelte in a fresh project, we get few files auto filled with demo data. We need to erase this in order to start writing code for our…
Directory and files structure of Svelte projects
In this short article we will learn about the files and directory structure of Svelte projects. This is the structure of project that we get when we install Svelte. If…
How to install and create project in Svelte
Svelte is a frontend framework which is used to build fast applications. But it is used for creating a single page app without navigation. In this article we will learn…
Svelte – Convert string into HTML
It is one of the requirements of the development to convert string into html. Different frameworks have different methods to do this. In Svelte, we use @html tag to let…
How to loop each block on provided length – Svelte
In this article I will show how to loop each block on provided length. This could be done by using either the Array() function or length property. Using Array() –…
Cannot access ‘variable_name’ before initialization – Svelte Error
Svelte throws the error, Cannot access ‘variable_name’ before initialization, when we try to assign reactive variables declared using $: to non-reactive variables like const, var, let etc. Consider this example…
How to import Firebase only on client in Sapper?
In this article you will learn How to import Firebase only on client in Sapper. Its a two step process which includes putting firebase scripts in template file and using…
How to import css in node_modules to svelte
To import css in node_modules to Svelte, you will need rollup-plugin or Svelte-preprocess. Using rollup-plugin Follow these steps – Step1: Install rollup css plugin Step2: Open rollup.config.js Now we need…
