这个新的语法gql`string是什么? [英] What is this new syntax gql`string`

问题描述

const GET_DOGS = gql`
  {
    dogs {
      id
      breed
    }
  }
`;

我从此处找到了这种新语法.

I found this new syntax from here.

您能解释一下这种语法吗?在哪里可以找到有关它的详细信息?

Can you explain this syntax? Where can I find detail about it?

推荐答案

它称为

It's called a tagged template. Template literals (`...`) can be prefixed with a function name. Upon evaluation, this function will be called and the static and dynamic parts of the template literal are passed to the function. Example:

function foo(staticParts, dynamicParts) {
  console.log(staticParts, dynamicParts);
}

foo`this is a ${42} test`

带标签的模板可用于创建域特定语言，例如本示例

Tagged templates can be used to create domain specific languages, such as in this example.

关于标签模板，有围绕标签模板的许多问题.

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