在TypeScript中不能使用`$ {document).ready` [英] Cannot use `$(document).ready` in TypeScript

问题描述

在TypeScript中使用$(document)会给出错误Supplied parameters do not match any signature of call target.

Using $(document) in TypeScript gives the error Supplied parameters do not match any signature of call target.

我正在使用TypeScript 3.1，jQuery 3.3.1和@ types/jQuery 3.3.29.

I'm using TypeScript 3.1, jQuery 3.3.1 and @types/jQuery 3.3.29.

$(document)是否已被弃用，我应该使用其他方法还是类型定义文件中的错误?

Is $(document) deprecated and I should use something else or is it an error in the type definition file?

此TypeScript文件的整个主体基本上是"Hello World！".

The entire body of this TypeScript file is basically "Hello World!".

$(document).ready(() => {
    console.log("Hello World!");
});

推荐答案

$(document).ready(handler)具有两个功能等效的变体，第一个是$().ready(handler)，第二个是直接的$(handler).

$(document).ready(handler) has two functionally equivalent variants, first is $().ready(handler), and second is direct $(handler).

在jQuery 3.0中，不建议使用前两个，仅保留$(handler).官方的理由是:

In jQuery 3.0 first two were deprecated, leaving only $(handler). The official justification is:

这是因为选择与.ready()方法的行为无关，效率低下并且可能导致对该方法行为的错误假设.

This is because selection has no bearing on the behavior of the .ready() method, which is inefficient and can lead to incorrect assumptions about the method's behavior.

TypeScript定义文件只是不包含不建议使用的语法，为了向后兼容，该语法仍然有效.您的脚本应如下所示:

TypeScript definition files just don't include deprecated syntax, which still works for the sake of backward compatibility. Your script should look like this:

$(() => {
    console.log("Hello World!");
});

这篇关于在TypeScript中不能使用`$ {document).ready`的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！