只要您的iframe src来自同一域，它就可以工作:

So long as your iframe src is from the same domain this will work:

$(document).ready(function () {
var f = $('#myframe')[0];
var win = f.contentWindow;

//Created test environment in IFrame with ID "myframe"
$(win.document.body).append('<form><input type="submit" value="click me"/></form>');
$(win.document).on('submit', function () {
    setTimeout(function () { $(f).remove();  }, 1000)
});

});

只需删除该元素，但请记住，您无法从非同一域的iframe获取contentDocument.

Simply remove the element but remember you can't get the contentDocument from an iframe that is not of the same domain.

工作解决方案: https://jsfiddle.net/f3eayurw/