问从">“开始的选择器是否是在jQuery中找到孩子的正确方法？

EN

                 //vv SPECIFIC CHILDREN
$(element).find('.second > .third');
                         //^^DESCENDANTS

<div id="parent">
    <div class="second"></div>
    <div class="second">
        <div class="third"></div>
        <div class="third"></div>
        <div class="placeholder">
            <div class="third"></div>
            <div class="second">
                <div class="third"></div>
            </div>
        </div>
    </div>
</div>

$(document).ready(function () {
    //Direct children (second)
    console.log("0: " + $('#parent').find('> .second').length) // 2
    //All children (second) + All children (third)
    console.log("1: " + $('#parent').children('.second').find('.third').length) // 4
    console.log("2: " + $('#parent').find('> .second .third').length) // 4
    //All children (second) + direct children (third)
    console.log("3: " + $('#parent').children('.second').find('> .third').length) // 2
    //Direct children (second) + direct children (third)
    console.log("3: " + $('#parent').find('> .second > .third').length) // 2
});