Cacher is the code snippet organizer for pro developers

(function(){
    var iframe = document.createElement("iframe");
    document.body.appendChild(iframe);
    var originWindow=iframe.contentWindow,
        currentWindow=window
    var origin =Object.keys(originWindow),
        current =Object.keys(currentWindow),
        extendAttr={};
    current.forEach((key)=>{
        if(originWindow[key]===undefined){
            extendAttr[key]=currentWindow[key]
        };
    })
    console.log(`origin window:${origin.length},current window:${current.length},extentAttr:${Object.keys(extendAttr).length}`)
    console.log("extendAttr:",extendAttr);
    document.body.removeChild(iframe);
})();