Two-way Binding

ELI5 — The Vibe Check

Two-way binding means your data and your input field are best friends who always tell each other what changed. Type in the box and the data updates. Change the data in code and the box updates. They stay perfectly in sync without you doing anything.

Real Talk

Two-way binding creates a bidirectional link between a form input element and a data property. In Vue it's achieved with v-model (syntactic sugar for binding + @input event). In React you implement it manually with value + onChange. Angular uses (ngModel).

Show Me The Code

<!-- Vue: v-model is two-way binding sugar -->
<input v-model="searchQuery" placeholder="Search..." />
<p>You typed: {{ searchQuery }}</p>

<!-- Equivalent to: -->
<input :value="searchQuery" @input="searchQuery = $event.target.value" />

When You'll Hear This

"Use v-model for two-way binding on form inputs." / "React doesn't have two-way binding built in — you wire it up manually."