The difference between v-bind and v-model in vue

In Vue.js, v-bind and v-model are used to bind HTML element attributes and data. v-bind is a one-way binding that only passes data from the Vue instance to the HTML element, while v-model is a two-way binding that can pass data between the Vue instance and the HTML element.

The difference between v-bind and v-model in Vue

In Vue.js, v-bind and v-model are two different directives used to bind attributes and data of HTML elements.

v-bind

• Purpose: Used to dynamically bind attribute values ​​of HTML elements.
• Syntax: v-bind:attribute-name="expression"
• Function: will be rendered on the element Binds the value of the expression to the specified property.

v-model

• Usage: Used for two-way binding of input values ​​​​of HTML elements and Vue instances data.
• Syntax: v-model="data-property"
• ##Function: will be used when the element is rendered The data in the Vue instance is bound to the value attribute of the element, and the input event of the element is also monitored, so that changes in its value are synchronously reflected in the Vue instance.

Difference

• Binding method: v-bind one-way binding, only from the Vue instance to the HTML element Pass data. The v-model two-way binding can pass data between Vue instances and HTML elements.
• Default attribute: v-bind binds the attribute value of the HTML element by default. And v-model binds the value attribute of the element by default.
• Update timing: v-bind updates the element's attributes when the data of the Vue instance changes. And v-model updates the data of the Vue instance when the element's input event fires.

Example

Using v-bind:

<code><button v-bind:disabled="loading">加载中</button></code>

Using v-model:

<code><input v-model="name"></code>

Conclusion

v-bind and v-model are two important instructions in Vue, used for one-way and two-way binding respectively. Understanding their similarities and differences is important to using Vue effectively.

The above is the detailed content of The difference between v-bind and v-model in vue. For more information, please follow other related articles on the PHP Chinese website!