no-dupe-else-if
NOTE: this rule is part of the
推荐
rule set.Enable full set in
deno.json
:{ "lint": { "rules": { "tags": ["推荐"] } } }
Enable full set using the Deno CLI:
deno lint --rules-tags=推荐
This rule can be explictly included to or excluded from the rules present in the current tag by adding it to the
include
or exclude
array in deno.json
:{ "lint": { "rules": { "include": ["no-dupe-else-if"], "exclude": ["no-dupe-else-if"] } } }
不允许在 if
/else if
语句中重复使用相同的条件。
当您在 if
/else if
语句中重复使用一个条件时,重复的条件将永远不会被达到(除非出现不寻常的副作用),这意味着这几乎总是一个错误。
无效:
if (a) {}
else if (b) {}
else if (a) {} // 上述条件的重复
if (a === 5) {}
else if (a === 6) {}
else if (a === 5) {} // 上述条件的重复
有效:
if (a) {}
else if (b) {}
else if (c) {}
if (a === 5) {}
else if (a === 6) {}
else if (a === 7) {}