in the console window of the browser tools in chrome or firefox. https://developer.chrome.com/devtools#console https://developer.chrome.com/devtools#console not

in the console window of the browser tools in chrome or firefox. https://developer.chrome.com/devtools#console https://developer.chrome.com/devtools#console note: javascript always runs in the context of a root object. in the browser, it's the window object. if the webpage has multiple frames, you might have to select the correct frame for the console to execute the js in.