A brief discussion on the mutual call of parent page method variables in js neutron

(1) The child page calls the parent page method or variable:

window.parent.Method() or variable name

window.parent is equivalent to writing the same operation after locating to the parent page as writing code in the parent page

 window.parent.aa();//Calling the aa function window.parent.bb;//Calling the bb variable For example: Want to get the value of the text box with id aaa in the subpage window.parent.$("#aaa").val();//The premise of this writing is to reference jquery window.parent.getElementById("aaa").value; //JS writing method

(2) Parent page retrieves child page

Mainly, it is to locate the subpage through contentWindow

 document.getElementById("childframe").contentWindow.childtest();//Writing method of js in the child page var childWindow = $("#addFrame")[0].contentWindow;//Get the object childWindow.formSubmit();//Writing method of jquery in the child page //Note: where both childframe and addFrame are id of the iframe

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