no-restricted-globals
禁止指定的全局变量
如果您想通过启用环境来允许一组全局变量,但仍想禁止其中一些变量,则禁止使用特定的全局变量会很有用。
例如,早期的 Internet Explorer 版本将当前 DOM 事件暴露为全局变量 event
,但长期以来,使用此变量一直被认为是一种不好的做法。限制这一点将确保此变量不在浏览器代码中使用。
规则详情
此规则允许您指定不想在应用程序中使用的全局变量名称。
选项
此规则采用字符串列表,其中每个字符串都是要限制的全局字符串:
{
"rules": {
"no-restricted-globals": ["error", "event", "fdescribe"]
}
}
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{
"rules": {
"no-restricted-globals": [
"error",
{
"name": "event",
"message": "Use local parameter instead."
},
{
"name": "fdescribe",
"message": "Do not commit fdescribe. Use describe instead."
}
]
}
}
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/*global event, fdescribe*/
/*eslint no-restricted-globals: ["error", "event", "fdescribe"]*/
function onClick() {
console.log(event);
}
fdescribe("foo", function() {
});
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/*global event*/
/*eslint no-restricted-globals: ["error", "event"]*/
import event from "event-module";
/*global event*/
/*eslint no-restricted-globals: ["error", "event"]*/
var event = 1;
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/*global event*/
/* eslint no-restricted-globals: ["error", { name: "event", message: "Use local parameter instead." }] */
function onClick() {
console.log(event); // Unexpected global variable 'event'. Use local parameter instead.
}