捷径

$(() => {
$('#myselect option').each((index, data) => {
    console.log(data.attributes.value.value)
})})

or

export function GetSelectValues(id) {
const mData = document.getElementById(id);
let arry = [];
for (let index = 0; index < mData.children.length; index++) {
    arry.push(mData.children[index].value);
}
return arry;}

这是一个简单的jQuery脚本:

var items = $("#IDSELECT > option").map(function() {
    var opt = {};
    opt[$(this).val()] = $(this).text();
    return opt;
}).get();
var selectvalues = [];

for(var i = 0; i < items.length; i++) {
    for(key in items[i]) {


        var id = key;
        var text = items[i][key];

        item = {}
        item ["id"] = id;
        item ["text"] = text;

        selectvalues.push(item);

    }
}
console.log(selectvalues);
copy(selectvalues);

<select>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>

没有jQuery 我知道HTMLSelectElement元素包含一个选项属性，这是一个htmlloptionscollection。

const myOpts = document.getElementById('yourselect').options;
console.log(myOpts[0].value) //=> Value of the first option

一个12岁的答案。让我们对它进行一些改进(使用. queryselectorall，将结果HTMLOptionsCollection扩展到Array并映射值)。

// helper to retrieve an array of elements using a css selector const nodes = selector => [...document.querySelectorAll(selector)]; const results = { pojs: nodes(`#demo option`).map(o => o.value), jq: $(`#demo option`).toArray().map( o => o.value ), } console.log( `pojs: [${results.pojs.slice(0, 5)}]` ); console.log( `jq: [${results.jq.slice(0, 5)}]` ); <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <select id="demo"> <option value="Belgium">Belgium</option> <option value="Botswana">Botswana</option> <option value="Burkina Faso">Burkina Faso</option> <option value="Burundi">Burundi</option> <option value="China">China</option> <option value="France">France</option> <option value="Germany">Germany</option> <option value="India">India</option> <option value="Japan">Japan</option> <option value="Malaysia">Malaysia</option> <option value="Mali">Mali</option> <option value="Namibia">Namibia</option> <option value="Netherlands">Netherlands</option> <option value="North Korea">North Korea</option> <option value="South Korea">South Korea</option> <option value="Spain">Spain</option> <option value="Sweden">Sweden</option> <option value="Uzbekistan">Uzbekistan</option> <option value="Zimbabwe">Zimbabwe</option> </select>

你可以使用以下代码:

var assignedRoleId = new Array();
$('#RolesListAssigned option').each(function(){
    assignedRoleId.push(this.value);
});

另一种方法是使用toArray()，以便使用胖箭头函数与map，例如:

const options = $('#myselect option').toArray().map(it => $(it).val())

Use:

$("#id option").each(function()
{
    // Add $(this).val() to your list
});

.each() | jQuery API文档