A conforming implementation of ECMAScript must interpret source text input in conformance with the latest version of the Unicode Standard and ISO/IEC 10646.
All Vue components are also Vue instances, and so accept the same options object (except for a few root-specific options) and provide the same lifecycle hooks.
<!DOCTYPE> 不是 HTML 标签;它是指示 web 浏览器关于页面使用哪个 HTML 版本进行编写的指令。在 HTML 4.01 中,<!DOCTYPE> 声明引用 DTD,因为 HTML 4.01 基于 SGML。DTD 规定了标记语言的规则,这样浏览器才能正确地呈现内容。HTML5 不基于 SGML,所以不需要引用 DTD。
[...] Matches a range of characters, similar to a RegExp range.If the first character of the range is ! or ^ then it matchesany character not in the range.
The key special attribute is primarily used as a hint for Vue’s virtual DOM algorithm to identify VNodes when diffing the new list of nodes against the old list. Without keys, Vue uses an algorithm that minimizes element movement and tries to patch/reuse elements of the same type in-place as much...
Vuex is a state management pattern + library for Vue.js applications. It serves as a centralized store for all the components in an application, with rules ensuring that the state can only be mutated in a predictable fashion.