使用 jQuery，如何获得特定的下拉元素（<select></select> ) 基于下拉列表的值？

Question

I have a class of dropdowns --.selMapField -- and I want to select the dropdown that has a specific value. For instance:

const myattr=$(`.selMapField[value="MYSKU"]`).attr(`x`);

Answer 1

Use jQuery's .filter() to find the elements by value

 const myattr = $(".selMapField").filter((_, { value }) => value === "MYSKU").attr("x") console.log(myattr)

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.slim.min.js"></script> <select class="selMapField" x="A"><option selected>FOO</option></select> <select class="selMapField" x="B"><option selected>MYSKU</option></select> <select class="selMapField" x="C"><option selected>BAR</option></select>

---

As always, you might not need jQuery

 const myattr = Array.from( document.querySelectorAll(".selMapField") ).find(({ value }) => value === "MYSKU")?.getAttribute("x") console.log(myattr)

 <select class="selMapField" x="A"><option selected>FOO</option></select> <select class="selMapField" x="B"><option selected>MYSKU</option></select> <select class="selMapField" x="C"><option selected>BAR</option></select>