Summary of jquery uncommon methods_jquery

1.jquery has a filtering API find.

The syntax is very simple, such as:

HTML code:

<p><span>Hello</span>, how are you&#63;</p>

jQuery code:

$("p").find("span")

Result:

[ <span>Hello</span> ]

But I was confused at first. This is not exactly the same as the $('p span') API. Why should I use this find?
I know I encountered an application scenario today.

The scene is like this. There is a div.skill. When the mouse passes over it, I need to add a new class to its sub-selector div.'skill-text',
Some students may ask why you don’t use event delegation:

$('.skill').on('mouseover',‘.skill-text',function(e){
     $(this).addClass('skill-active');
});

Because I have processing code for '.skill' later, and there are many similar .skills, I cannot directly operate through $('.skill'), I must use this or e.target;

$('.skill').on('mouseover',function(e){

     $(this).find('.skill-text').addClass('skill-active');

　　　//.......其余代码

});

Very useful in this situation. Because you can't find the object directly using css selector.

Other than that, I really haven’t thought of any other good methods. How can I write it if the native js cannot be found? . . . 【Doubtful】

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