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javascript - About the isPlainObject function in jQuery source code to determine whether the object is a pure object

{Code...} The following is the code mentioned in the appeal code {Code...} In jQuery 3.2.1, the function that determines whether an object is a pure object. The last two lines were not equivalent when I tested it myself. I would like to ask where the problem lies {code...} and why the output result ...

phpcn_u1582 2017-06-12 09:28:36

A method to dynamically render circular sectors without using HTML5 canvas

I'm making a fortune wheel and I need to create a wheel or circle based on the number of sectors and fill it with prize names. I've completed the code for a circle with a fixed number of sectors. Here is an example of a circle containing 6 sectors. .wheel_container{position:relative;--wheel-size:360...

P粉731861241 2023-09-02 10:43:07

javascript - As a beginner in programming, should I use an editor to copy the source code of jQuery or thinkphp?

Beginners in programming, do you want to use an editor to copy the source code of the jQuery library or thinkphp framework? To improve your programming abilities and ideas? I remember seeing a person on Zhihu who did the same thing. Now look for that answer. Not here. Can the experts tell me how eff...

高洛峰 2017-06-05 11:07:36

javascript - JQuery each traverses the A tag to obtain the href and takes the value of the attribute in the link and adds the attribute of A

The original HTML code in the page: {code...} The final output effect I hope to achieve through jquery: {code...} My current jQuery code: {code...} Please give me some advice! !

伊谢尔伦 2017-05-19 10:40:16

javascript - When doing || operation between jquery objects, why is the returned value not of boolean type?

The jquery source code fragment is as follows: {Code...} I think the context here is a jquery object, and the rootjquery is $(document). But shouldn’t the demerits they return be a Boolean value? Why is it a jquery object here? So the || operation is in What is done here? What is his role??? Thank y...

漂亮男人 2017-05-16 13:35:57

javascript - Ask a question about this in JS.

Why is the onclick event not triggered in this place? If you can get the DOM object of the currently clicked li in jquery, can't it be used in JS like this? {Code...} {Code...} Modification: {Code...} {Code...} Thank you all, I used jquery before, now I will read it again...

滿天的星座 2017-07-05 10:49:51

javascript - Newbie, please tell me why the jquery method can be used on this DOM object?

{Code...} $p = $(document.getElementsByTagName("div")); Isn't this a dom object? Why is it still useful if I use the jquery method below? I tested that if the above is a jquery object and the dom operation method is replaced below, it will not work. . . Also, jquery objects and dom objects...

世界只因有你 2017-07-05 10:59:54

Login cannot load jquery code

There is no problem with the code, but there is no response when clicking login

笙 2019-07-30 17:40:51

javascript - Traverse and modify <td> tags

jquery version: 1.8 The original code {code...} was changed to {code...}. I tried adding id="img" to <td>11,12</td>, but $("#img") failed. eq(1).html() cannot obtain the content of the second line. {Code...} I am not very familiar with jQuery and I hop...

仅有的幸福 2017-07-05 10:57:16