Sometimes window.open will be used in the project to pop up some windows without operation options. I need a way to judge the type of these windows. I tried several properties in the picture below and found that they are not very reliable under IE. , does anyone have a better method that I can use to plagiarize?

You can add an attribute to the URL to identify the window type, such as:
window.open = 'test.html?type=1'Then, you only need to get thistypeparameter to know the window type (if If the type does not exist, jump to the default type).You can also see that a window will have many features, and sometimes multiple judgment conditions may need to be used,
if A && B && Cetc., so I think you define these features as a set of numerical constants, Then justswitch.