Disallow Labels That Are Variables Names (no-label-var)

禁用与变量同名的标签 (no-label-var)

Rule Details

This rule aims to create clearer code by disallowing the bad practice of creating a label that shares a name with a variable that is in scope.

该规则旨在通过禁止使用同一作用域下的同名的变量做为标签,来创建更清晰的代码。

Examples of incorrect code for this rule:

错误 代码示例:

/*eslint no-label-var: "error"*/

var x = foo;
function bar() {
x:
  for (;;) {
    break x;
  }
}

Examples of correct code for this rule:

正确 代码示例:

/*eslint no-label-var: "error"*/

// The variable that has the same name as the label is not in scope.

function foo() {
  var q = t;
}

function bar() {
q:
  for(;;) {
    break q;
  }
}

When Not To Use It

If you don’t want to be notified about usage of labels, then it’s safe to disable this rule.

如果你不想收到标签的使用情况的通知,可以关闭此规则。

Further Reading

Version

This rule was introduced in ESLint 0.0.9.

该规则在 ESLint 0.0.9 中被引入。

Resources


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