v-bind Dynamic and Multiple Bindings
Dynamic attribute names :[dynamicAttr], v-bind object syntax, binding multiple attrs at once.
v-bind Dynamic and Multiple Bindings is a free Vue Academy lesson on CoddyKit. This is lesson 3 of 4. Any 3 lessons of this learning path are free to read in full — after that, CoddyKit PRO unlocks every lesson, plus hands-on practice with a built-in code editor and a 24/7 AI tutor. It is part of the Vue Academy learning path, and your progress syncs across the web and the CoddyKit app. The Vue Academy course includes 4 lessons in total.
Binding Attributes Dynamically
The v-bind directive (shorthand :) connects an HTML attribute to a reactive value. It powers dynamic classes, styles, and even dynamically named attributes.
Basic v-bind
Bind any attribute to an expression. When the value changes, Vue updates the attribute.
<img :src="imageUrl" :alt="description" />Class Binding: Object Syntax
For classes, the object syntax toggles a class based on a truthy value. The key is the class name; the value decides whether it applies.
<div :class="{ active: isActive, disabled: isDisabled }"></div>Class Binding: Array Syntax
The array syntax applies a list of classes. Mix static strings and reactive variables, or nest an object for conditional entries.
<div :class="[baseClass, isActive ? activeClass : '']"></div>Combining Array and Object
You can nest the object form inside the array to get the best of both — always-on classes plus conditional ones.
<div :class="[baseClass, { active: isActive }]"></div>Style Binding: Object Syntax
Bind inline styles with an object. Use camelCase property names (or kebab-case in quotes). Values can be reactive.
<div :style="{ color: textColor, fontSize: size + 'px' }"></div>Style Binding: Array of Objects
Pass an array of style objects to merge multiple style sources, such as a base style and a theme override.
<div :style="[baseStyles, overrideStyles]"></div>Binding Many Attributes at Once
v-bind without an argument spreads an entire object of attributes onto the element. Each key becomes an attribute.
<script setup>
const attrs = { id: 'main', class: 'box', 'data-role': 'panel' }
</script>
<template>
<div v-bind="attrs"></div>
</template>Dynamic Attribute Names
Use square brackets to compute the attribute name itself at runtime. The bracketed expression is evaluated and used as the attribute key.
<script setup>
const attrName = 'title'
const attrValue = 'Hello'
</script>
<template>
<div :[attrName]="attrValue"></div>
</template>When to Use Each
- Object class syntax — toggling several classes by condition.
- Array class syntax — combining a base class with conditionals.
v-bind="obj"— forwarding a whole set of attributes.- Dynamic name
:[name]— when the attribute key is decided at runtime.
A Combined Example
This element uses dynamic class, dynamic style, and spread attributes together — all reactive.
<div
:class="[base, { active: isActive }]"
:style="{ color: textColor }"
v-bind="extraAttrs"
></div>Quick Check
Test your v-bind knowledge.
Recap
You learned the breadth of v-bind:
- Object class syntax toggles classes by condition; array syntax combines them.
- Style binding uses objects (camelCase) or arrays of objects.
v-bind="obj"spreads all attributes from an object.:[name]="val"binds a dynamically named attribute.
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- Courses
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Frequently Asked Questions
Is the “v-bind Dynamic and Multiple Bindings” lesson free?
Yes — any 3 lessons of the Vue Academy learning path, including “v-bind Dynamic and Multiple Bindings”, are free to read in full here on the web. After that, CoddyKit PRO unlocks every lesson, plus interactive practice with a built-in code editor and a 24/7 AI tutor. The Vue Academy course includes 4 lessons in total.
What will I learn in “v-bind Dynamic and Multiple Bindings”?
Dynamic attribute names :[dynamicAttr], v-bind object syntax, binding multiple attrs at once. You practise Vue 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 Vue Academy?
No prior experience is required. Vue Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 3 of 4.
How long does the “v-bind Dynamic and Multiple Bindings” 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 Vue Academy lesson?
Yes. Every Vue 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
- v-model: Two-Way Binding Internals
- v-on Event Modifiers
- v-bind Dynamic and Multiple Bindings
- Writing Custom Directives