Differences Between opener and parent in js: openerparent

Differences Between opener and parent in js: openerparent
Opener is who opens my project. For example, A page uses window. when the open dialog box appears, the window where page A is located is the opener of page B. You can access page A through the opener object on page B. Parent indicates the parent window. For example, if A page A uses iframe or frame to call page B, the window where page A is located is the parent of page B. In JS, window. opener only references the parent window of the pop-up window. For example, in a.html, open a new window B .html by clicking the "click" and click "other" to generate a new window. Contents. If this reference fails, null is returned. Therefore, before calling an opener object, you must first determine whether the object is null. Otherwise, a JS error "the object is empty or does not exist" will occur. --------------------------------Back2opener.html -------------------------------- window. in a textbox with the id "name" on the opener connector, you can write it as follows: zookeeper opener.doc ument. getElementById ("name "). value = "input data ";
Q: What are their differences in js such as windowlocation, windowopener, and parent? There are other issues. Please help me with them. Thank you very much.

Window. location setting the current page address is limited to the current page. Generally, when the webpage uses the frame structure, it is used to jump to the page window. opener enables parameters in a new page to set the size of the new page and other related information opener. parent sets the webpage display address and window. location is similar, but it sets the address window of the entire page. location only sets the local page address of the currently displayed page. The difference is generally only visible when the framework is used on the page.

Opener problems in js

Generally, iframe is used to call the current window. Similar to parent