可修改的占位符变量

<var> 元素允许读者将占位符变量替换为自己的变量 值。

常规用法

Markdown 点击复制代码块中可修改的占位符变量为 默认可修改。

Edit the name of this PROJECT_ID.

启用编辑功能

将 edit 类添加到 <var> 元素中，以创建具有以下特征的变量： EDITABLE。

停用编辑功能

This example adds the `readonly` class to the <var> element to create an
UNEDITABLE_VARIABLE.

This example adds the `readonly` class to the code block to disable editability
of both VARIABLE_1 and VARIABLE_2.

提示

This EDITABLE variable has a tooltip that defaults to the
name of its original placeholder text.

This EDITABLE variable uses a `label`
attribute to create a custom tooltip named
Edit me.

同步

具有相同范围的可修改占位符变量会与每个变量同步 其他，并立即更新以反映新值。

停用同步功能

This variable synchronizes by default because it is in a click-to-copy code
block. It has a `label` attribute named `variable with scope`:
  VARIABLE

This variable adds the `no-scope` class so that it does not synchronize with the
other variables and has a `label` attribute named `variable without scope`:
  VARIABLE

This variable also synchronizes by default and has a `label` attribute named
`variable with scope`:
  VARIABLE

启用同步

此占位符 VARIABLE 为 在代码块外部进行设置，并使用 scope 属性与 上文“停用同步”部分中的变量。