Mustache syntax is used in Vue templates to dynamically bind data to HTML, and its core purpose is to display plain text content. 1. The basic usage is to output the values in data through {{ message }}; 2. Support simple expressions such as splicing, conditional judgment and method calls, but they should be kept concise; 3. When combined with instructions, binding syntax such as v-if and v-bind (or abbreviation: href); 4. Pay attention to avoid complex logic, optimize frequent updates, and prevent XSS risks.
Using Mustache syntax (that is, double curly braces {{ }} ) in Vue's templates is a very basic and very common operation. It is mainly used to bind data to HTML to realize the display of dynamic content.
Basic usage: display text content
The easiest way to use it is to directly output data attributes:
<p>{{ message }}</p> Suppose you define message: 'Hello Vue!' in data of the Vue instance, "Hello Vue!" will appear on the page. Mustache will automatically replace the data with the corresponding value.
It should be noted that this writing method can only be used to display plain text and cannot render HTML content. If you try to put HTML tags inside, like {{ '<strong>bold</strong>' }} , it will output as is instead of bold text.
Expression support: simple operations can be done
Mustache not only can directly output variables, but also supports simple expressions:
- String stitching:
{{ firstName ' ' lastName }} - Conditional judgment:
{{ age > 18 ? '成年' : '未成年' }} - Method calls (although it is more recommended to use computed properties):
{{ formatName() }}
However, be aware that these expressions should be kept concise. It is recommended to put too complicated logic into methods or computed .
Use with instructions: Flexible control of DOM
Although you cannot use Mustache in directives, you can pass data to directive parameters. For example:
<p v-if="isVisible">{{ content }}</p> Here v-if directly receives a boolean value to decide whether to render the paragraph, while {{ content }} is responsible for displaying the specific content. The combination of the two can achieve more flexible content control.
There are also some scenarios that require dynamic binding properties. You cannot use Mustache at this time, but you need to use v-bind :
<a v-bind:href="url">{{ linkText }}</a>Or abbreviated as:
<a :href="url">{{ linkText }}</a>Notes and FAQs
- Avoid complex logic : Try not to write complex statements in Mustache to keep the template clear.
- Performance considerations : Frequently updated data may cause unnecessary re-rendering, pay attention to optimization.
- Security issues : Do not use
v-htmlto cooperate with user input to prevent XSS attacks.
Basically that's it. With these points mastered, you can skillfully use Mustache syntax in Vue templates. Although it seems simple, it is very practical in actual development.
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