bind:value for Text Inputs
Keep text input values in sync with component variables automatically.
bind:value for Text Inputs is a free Sveltejs Academy lesson on CoddyKit — lesson 1 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Sveltejs Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
What bind:value Does
The bind:value directive creates a two-way connection between a variable and a form input.
Basic Example
Bind a let variable to a text input. Typing updates the variable; programmatic changes update the field.
<script>
let name = "";
</script>
<input bind:value={name} />
<p>Hello {name}</p>Shorthand
If the variable and attribute share a name, omit the right side.
<input bind:value />Number Inputs
For type="number", Svelte coerces the value to a number automatically.
<input type="number" bind:value={age} />Range Inputs
Sliders work the same way and also coerce to numbers.
<input type="range" bind:value={volume} />Textareas
Bind value on textareas just like inputs.
<textarea bind:value={comment}></textarea>Select Single
For a single <select>, bind value to the selected option value.
<select bind:value={color}>
<option>red</option>
<option>blue</option>
</select>Programmatic Update
Assigning to the bound variable updates the input immediately. Useful for clear-form buttons.
function clear() { name = ""; }No Re-renders Needed
Reactivity is automatic. You never call setState or rebind manually.
Validation
Add reactive statements to validate as the user types.
$: isValid = email.includes("@");Debouncing
For expensive validation, debounce inside a reactive statement or use a util like lodash.debounce.
Quick Check
What does bind:value do?
Recap
Use bind:value for two-way input binding with automatic type coercion on number and range inputs.
Frequently asked questions
Is the “bind:value for Text Inputs” lesson free?
Yes — the full text of “bind:value for Text Inputs” is free to read here on the web, and the Sveltejs Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Sveltejs Academy course, upgrade to CoddyKit PRO.
What will I learn in “bind:value for Text Inputs”?
Keep text input values in sync with component variables automatically. You practise Sveltejs Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Sveltejs Academy?
No prior experience is required. Sveltejs Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 1 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “bind:value for Text Inputs” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Sveltejs Academy lesson?
Yes. Every Sveltejs Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- bind:value for Text Inputs
- bind:checked for Checkboxes
- bind:group for Radio and Checkbox Groups
- bind:this for DOM Element References