这是一个简单的例子在jquery中获得所有的值，文本，或所选项目的值，或所选项目的文本

$('#nCS1 > option').each((index, obj) => {
   console.log($(obj).val());
})

printOptionValues = () => { $('#nCS1 > option').each((index, obj) => { console.log($(obj).val()); }) } printOptionTexts = () => { $('#nCS1 > option').each((index, obj) => { console.log($(obj).text()); }) } printSelectedItemText = () => { console.log($('#nCS1 option:selected').text()); } printSelectedItemValue = () => { console.log($('#nCS1 option:selected').val()); } <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <select size="1" id="nCS1" name="nCS1" class="form-control" > <option value="22">Australia</option> <option value="23">Brunei</option> <option value="33">Cambodia</option> <option value="32">Canada</option> <option value="27">Dubai</option> <option value="28">Indonesia</option> <option value="25">Malaysia</option> </select> <br/> <input type='button' onclick='printOptionValues()' value='print option values' /> <br/> <input type='button' onclick='printOptionTexts()' value='print option texts' /> <br/> <input type='button' onclick='printSelectedItemText()' value='print selected option text'/> <br/> <input type='button' onclick='printSelectedItemValue()' value='print selected option value' />

$("input[type=checkbox][checked]").serializeArray();

Or:

$(".some_class[type=checkbox][checked]").serializeArray();

看看结果:

alert($("input[type=checkbox][checked]").serializeArray().toSource());

$("#id option").each(function()
{
    $(this).prop('selected', true);
});

不过，正确的方法是设置元素的DOM属性，如下所示:

$("#id option").each(function(){
    $(this).attr('selected', true);
});

$('select#id').find('option').each(function() {
    alert($(this).val());
});

Use:

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

.each() | jQuery API文档

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;}