javascript - 选中/取消选中复选框时更改相应标签的文本

Question

我无法使用此 javascript 函数。任何帮助将不胜感激!

---

<input type="checkbox" class="checkit" name="smoking" id="smoking" value="1" onclick="yesno('smoking','yesnos');" /><label for="smoking" name="yesnos" id="yesnos">No</label>

        function yesno(thecheckbox, thelabel){
            var checkboxvar = document.getElementById(thecheckbox);
            var labelvar = document.getElementById(thelabel);
            if (checkboxvar.checked == false){
                document.getElementById(labelvar).innerHTML = "No";
            }
            else{
                document.getElementById(labelvar).innerHTML = "Yes";
            }
        }

Answer 1

我把你的代码改成了这个，它似乎可以工作:

function yesno(thecheckbox, thelabel) {

    var checkboxvar = document.getElementById(thecheckbox);
    var labelvar = document.getElementById(thelabel);
    if (!checkboxvar.checked) {
        labelvar.innerHTML = "No";
    }
    else {
        labelvar.innerHTML = "Yes";
    }
}

See here在 jsFiddle 上