javascript delete删除对象删除不了？

Question

javascript 的delete方法动态删除对象的时候，删除到最后一个为什么删除不掉？

var input_panelData = {
    a:{},
    b:{},
}

$("#remove_inputItemsPanel_" + i_item).click(function () {
    var removename = $(this).data("removename");//获取子对象名字
    delete input_panelData[removename];//删除此对象
    $("#input_panel").empty();//清空p
    inputItems();//重新获取对象并展示
    console.log(removename);
})

但是delete到最后一个函数的时候就删除不掉

Answer 1

The delete operator removes a property from an object.

The correct usage as following:

delete object.property
delete object['property']

delete is only effective on an object's properties. It has no effect on variable or function names. Which means nothing will happen while deleting x variable.

And you may need to know, the delete operator has nothing to do with directly freeing memory (it only does indirectly via breaking references)