主题
isNative
js
_.isNative(value)
检查 value
是否是原始原生函数。
¥Checks if value
is a pristine native function.
注意:此方法无法在存在 core-js 包的情况下可靠地检测原生函数,因为 core-js 会绕过这种检测。尽管多次请求,但 core-js 维护者已经明确表示:任何修复检测的尝试都将受到阻碍。因此,我们别无选择,只能抛出错误。不幸的是,这也会影响依赖 core-js 的包,例如 babel-polyfill。
¥Note: This method can't reliably detect native functions in the presence of the core-js package because core-js circumvents this kind of detection. Despite multiple requests, the core-js maintainer has made it clear: any attempt to fix the detection will be obstructed. As a result, we're left with little choice but to throw an error. Unfortunately, this also affects packages, like babel-polyfill, which rely on core-js.
新增于
¥Since
3.0.0
参数
¥Arguments
value
(*):要检查的值。¥
value
()*: The value to check.
返回
¥Returns
(布尔):如果 value
是原生函数,则返回 true
,否则返回 false
。
¥(boolean): Returns true
if value
is a native function, else false
.
示例
¥Example
js
_.isNative(Array.prototype.push);
// => true
_.isNative(_);
// => false