Cannot read property 'style' of null

[我是隔壁老刘啊]

$(document).ready(function () {
    var width = document.body.clientWidth;
    var ss = parent.document.getElementById("html").id;
    alert(ss);
    document.getElementById('html').style.fontSize = width + "px";


    var height2 = window.screen.availHeight;
    document.getElementById("DingcanMain_main_right").style.height = height2 / 380 - 0.48 + "rem";

})

ss可以打印出“html”，我注释了一下，所有 document.getElementById(" ") 都会报 Cannot read property 'XXX' of null的错误，问过度娘，把引用放最后也没用……给大神跪了

[EdsionWang]

是父子窗体取元素值吗

var ss =window.opener.document.getElementById("html").id;
    alert(ss);

试试

[我是隔壁老刘啊]

忘记结贴了，抱歉