我想做两点改变:

<input type="radio" name="myRadios" onclick="handleClick(this);" value="1" />
<input type="radio" name="myRadios" onclick="handleClick(this);" value="2" />

使用onclick处理程序而不是onchange -您正在更改无线电输入的“已检查状态”，而不是值，因此不会发生更改事件。 使用单个函数，并将其作为参数传递，这将便于检查当前选择的值。

ETA:除了handleClick()函数，您还可以在页面作用域变量中跟踪收音机的原始/旧值。那就是:

var currentValue = 0;
function handleClick(myRadio) {
    alert('Old value: ' + currentValue);
    alert('New value: ' + myRadio.value);
    currentValue = myRadio.value;
}

var currentValue = 0; 函数handleClick(myRadio) { alert('旧值:' + currentValue); alert('新值:' + myRadio.value); currentValue = myRadio.value; ｝ <input type="radio" name=" my" onclick="handleClick(this);" value="1" /> . <input type="radio" name=" my" onclick="handleClick(this);" value="2" /> .

从这个例子中可以看到:http://jsfiddle.net/UTwGS/

HTML:

<label><input type="radio" value="1" name="my-radio">Radio One</label>
<label><input type="radio" value="2" name="my-radio">Radio One</label>

jQuery:

$('input[type="radio"]').on('click change', function(e) {
    console.log(e.type);
});

在选择单选按钮选项时(至少在某些浏览器中)会触发单击和更改事件。

我还应该指出，在我的例子中，当您使用tab和键盘选择一个选项时，单击事件仍然会触发。

因此，我的观点是，即使某些浏览器触发了change事件，但click事件应该提供所需的覆盖范围。

博士Tl;

'focusout'在'change'事件之前被分派-示例:

const radioName = 'radio';

// Add radios
document.body.innerHTML = `
<style>
input + label {
  margin-left: 1rem;
}
</style>
<form action="#" name="example-form">
  <fieldset>
    ${Array(5).fill(null, 0, 5).map((_, i) => {
        const offsetId = i + 1;
        const id = `radio-${offsetId}`;
        return `<label for="${id}">Radio ${offsetId}</label>
        <input type="radio" name="${radioName}" id="${id}" value="${offsetId}" />`;
      }).join('\n')}
  </fieldset>
</form>
`;

const {log} = console,

    form = document.forms['example-form']; 

form.addEventListener('submit', e => e.preventDefault());

form.addEventListener('change', e => {
    const {target} = e;
    if (target.matches(`[type="radio"][name="${radioName}"]`)) {
        log(`[${e.type}]: "${target.id}" selected;  Value: ${target.value}`);
    }
});

form.addEventListener('focusout', e => {
    const {target} = e,

        soonToBePrevValue = target && target.form ? 
            target.form.elements[radioName].value : null;
    
    if (!target.matches(`[type="radio"][name="${radioName}"]`) || !soonToBePrevValue) {
        return;
    }

    // value, for '[name="radio"]', contained in form, will change after 'focusout' event
    // has completed it's bubbling stage.
    log(`[${e.type}]: previously selected radio value: ` + 
        `${soonToBePrevValue}`);
        
    // log("Soon to be \"previous\" radio: ", target);
});

斯菲德尔

这是最简单和最有效的函数，只需添加尽可能多的按钮到checked = false，并使每个单选按钮的onclick事件调用此函数。为每个收音机指定一个唯一的号码 按钮

function AdjustRadios(which) 
{
    if(which==1)
         document.getElementById("rdpPrivate").checked=false;
    else if(which==2)
         document.getElementById("rdbPublic").checked=false;
}

您可以添加以下JS脚本

<script>
    function myfunction(event) {
        alert('Checked radio with ID = ' + event.target.id);
    }
    document.querySelectorAll("input[name='myRadios']").forEach((input) => {
        input.addEventListener('change', myfunction);
    });
</script>

This is just off the top of my head, but you could do an onClick event for each radio button, give them all different IDs, and then make a for loop in the event to go through each radio button in the group and find which is was checked by looking at the 'checked' attribute. The id of the checked one would be stored as a variable, but you might want to use a temp variable first to make sure that the value of that variable changed, since the click event would fire whether or not a new radio button was checked.