Introduction to template conversion functions in Vue documentation

As a front-end framework, Vue has very detailed documentation, but one of the more difficult concepts is the template conversion function. This article will introduce the template conversion function in the Vue document to help readers better understand and use Vue.

1.What is the template conversion function?

The template conversion function is the process used by the Vue compiler to convert Vue templates into rendering functions. Vue template is an HTML string with extended syntax, in which Vue instructions, interpolation and other Vue-specific syntax can be used.

The rendering function is one of the rendering methods of Vue components. Its essence is a function that returns a VNode node tree. VNode is Vue's virtual DOM, which is used to describe properties and methods related to the real DOM.

2. Two important parameters of the template conversion function

Vue’s template conversion function has two important parameters, namely template string and compilation options.

The template string is the HTML string form of the Vue template. The compilation option is an object that can pass the configuration items required by the Vue compiler. Commonly used attributes of compilation options include delimiters (template delimiters), preserveWhitespace (preserve whitespace characters), modules (custom compilation modules), etc.

For example, we can use the template conversion function like this:

const { render, staticRenderFns } = compileToFunctions(template)

Among them, template is our template string, compileToFunctions is a custom compilation function, and its return value contains what we need Rendering functions and static rendering functions.

3. The internal principle of the template conversion function

Vue’s template conversion function uses regular expressions internally to convert the Vue template string into the corresponding VNode according to different Vue instructions and syntax. .

For example, for data binding syntax (v-model), event listening syntax (@click), etc., Vue will convert them into corresponding properties and event listeners, and finally use them in VNode in the corresponding way. Present.

Vue's template conversion function has some advantages. For example, its functionality can be extended through the plug-in mechanism to support our customized syntax, which also helps us better understand and debug the running process of Vue applications.

Summary

This article introduces the template conversion function in the Vue document. I hope readers can better understand and use Vue, and at the same time feel the design of Vue as an excellent framework. and implementation ideas. By learning Vue in depth, we can write more robust and efficient front-end applications.

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