Access to the IFRAME sub-page and the parent page element in the HTML and the JS variable

1. Child page access to parent page element

PARENT.DOCUMENT.GETELEMENTBYID (' ID ') and document related methods can be used in this way with 2, the parent page to access the child page element document.getElementById (' Iframeid '). Contentdocument.getelementsbytagname (' table '); Contentdocument can use the document related Method 3, sub-page access to the parent page JS variable or method (note: The parent page of the JS variable needs to be global variables and global method) sub-page var variable = parent.variableparent ( Variableparent the variable defined for the parent page 4, parent page Access Child page JS variable This part of the current solution is to set the global variable on the parent page and assign the child page variable to the parent page after the child page has been modified.

Access to the IFRAME sub-page and the parent page element in the HTML and the JS variable