How to handle document.body being null on IE7 when trying to call appendChild on it
I am getting error specific to Internet Explorer 7 due to document.body being null on that platform.
The error happens when I try to do document.body.appendChild(i) in the following code:
function nm_eraseCookie(name) {
nm_createCookie(name,"",-1)
}
var i = document.createElement('IMG');
i.src = '//e.netmng.com/pixel/?aid=403';
i.width = 1;
i.height = 1;
document.body.appendChild(i);
nm_createCookie('nm_b开发者_如何学Pythonelgacom_bt',
escape('tv1=bun_intvtel;tv2=;tv3=;phone1=hbs_discoveryline;phone2=hbs_classical_line;phone3=;inet1=bun_nettvmob;inet2=hbs_adsl_res_plus;inet3=hbs_adsl_res_go;nm_banner=;nm_popin=hbs_discoveryline;'),183);
How can I solve this issue?
You could try
document.getElementsByTagName('body')[0].appendChild(i);
Now that won't do you any good if the code is running in the <head>, and running before the <body> has even been seen by the browser. If you don't want to mess with "onload" handlers, try moving your <script> block to the very end of the document instead of the <head>.
It is working. Just modify to null check:
if(document.body != null){
document.body.appendChild(element);
}
Pointy's suggestion is good; it may work, but I didn't try.
You can appendChild to document.body but not if the document hasn't been loaded. So you should
put everything in:
window.onload=function(){
//your code
}
This works or you can make appendChild to be dependent on something else like another event for eg.
https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_doc_body_append
As a matter of fact you can try changing the innerHTML of the document.body it works...!
In 2019 you can use querySelector for that.
It's supported by most browsers (https://caniuse.com/#search=querySelector)
document.querySelector('body').appendChild(i);
May also want to use "documentElement":
var elem = document.createElement("div");
elem.style = "width:100px;height:100px;position:relative;background:#FF0000;";
document.documentElement.appendChild(elem);
If your script is inside head tag in html file, try to put it inside body tag. CreateElement while script is inside head tag will give you a null warning
<head>
<title></title>
</head>
<body>
<h1>Game</h1>
<script type="text/javascript" src="script.js"></script>
</body>
加载中,请稍侯......
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