类型错误:需要更多论证
当函数调用方式出现错误时,就会出现 JavaScript 异常 "需要更多参数"。需要提供更多参数。
¥The JavaScript exception "more arguments needed" occurs when there is an error with how a function is called. More arguments need to be provided.
信息
¥Message
TypeError: Object prototype may only be an Object or null: undefined (V8-based) TypeError: Object.create requires at least 1 argument, but only 0 were passed (Firefox) TypeError: Object.setPrototypeOf requires at least 2 arguments, but only 0 were passed (Firefox) TypeError: Object.defineProperties requires at least 1 argument, but only 0 were passed (Firefox) TypeError: Object prototype may only be an Object or null. (Safari)
错误类型
什么地方出了错?
示例
未提供必需的参数
¥Required arguments not provided
Object.create()
方法需要至少一个参数,Object.setPrototypeOf()
方法需要至少两个参数:
¥The Object.create()
method requires at least one argument and the
Object.setPrototypeOf()
method requires at least two arguments:
js
const obj = Object.create();
// TypeError: Object.create requires at least 1 argument, but only 0 were passed
const obj2 = Object.setPrototypeOf({});
// TypeError: Object.setPrototypeOf requires at least 2 arguments, but only 1 were passed
你可以通过将 null
设置为原型来解决此问题,例如:
¥You can fix this by setting null
as the prototype, for example:
js
const obj = Object.create(null);
const obj2 = Object.setPrototypeOf({}, null);
也可以看看
¥See also
- 函数 指南