如何禁用窗体中的所有列表框

只是为了改进加文的正确答案:

var selects = theform.getElementsByTagName("select");
for (i = 0; i < selects.length; i++) {
  selects[i].disabled = true;
}

$('#formId select').attr('disabled', 'disabled');

编辑:哎呀,我还以为看到了jquery标记呢。无论如何:—

for (i = 0; i < theform.length; i++) {
        var formElement = theform.elements[i];
        if (formElement.tagName === "SELECT") {
            formElement.disabled = true;
        }
}