单选按钮未在jQuery中检查(Radio buttons not checked in jQuery)

 我有这行代码页面加载： 
 
if ($("input").is(':checked')) {
 
 当单选按钮输入被选中时，它工作正常。 但是，我想要相反。 沿线的东西 
 
if ($("input").not(.is(':checked'))) {
 
 所以当没有选择任何单选按钮时，if语句运行。 什么是最好的方法呢？ 

I have this line of code for page load:
 
if ($("input").is(':checked')) {
 
and it works fine when the radio button input is checked. However, I want the opposite. Something along the lines of 
 
if ($("input").not(.is(':checked'))) {
 
so that my if statement runs when none of the radiobuttons are selected. What is the best way to go about this?

原文：https://stackoverflow.com/questions/372325