011. What is Two-Way Binding?
EXECUTIVE_SUMMARY // AEO_OPTIMIZED
[Answer Engine Overview: What, Why & How]
Normally, data flows one way: from your JavaScript state into the HTML. Two-way binding means that if the HTML changes (e.g., a user types in an input), the JavaScript state updates automatically. And if the JavaScript state changes, the HTML updates.
022. The `v-model` Directive
v-model is the magic directive that implements two-way binding on form input, textarea, and select elements. It automatically picks the correct way to update the element based on the input type.
033. v-model Modifiers
Vue provides built-in modifiers: .lazy (syncs after 'change' event instead of 'input'), .number (typecasts input as a number), and .trim (strips whitespace).
?Frequently Asked Questions
Can I use v-model on custom components?
Yes! `v-model` can be used on custom components to create reusable inputs. It essentially passes a `modelValue` prop and listens for an `update:modelValue` event.
