Can Firebug Lite be loaded conditionally?
I'd like to be able to load Firebug lite conditionally (eg, based on the value of debug variable). I've tried this:
<script type="text/javascript">
var fi开发者_如何学编程leref;
if(condition) {
fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript")
fileref.setAttribute("src", "https://getfirebug.com/firebug-lite.js")
}
</script>
at the top of my <head>, but to no avail. Anyone have any suggestions?
After creating an element, you need to insert it into the DOM. This can be done using .appendChild().
Add this to your if:
var head = document.getElementsByTagName("head")[0];
head.appendChild(fileref);
You could add this to your footer. I'm open to criticism. If you can make this better, go for it.
<script>
// First uncomment this to get your user agent,
// So we can hide Firebug Lite from the general public
// Remember to change this if you change browsers :-)
// document.write("<p>User agent: "+ navigator.userAgent +"</p>");
// Note: Not sure why but Firebug Lite may open in a new tab, even if you tell it not to
// UNLESS you use Google Chrome for Android (NOT the Beta version!)
if (
navigator.userAgent == "Mozilla/5.0 (Linux; Android 4.4.2;"
)
{
var fileref;
fileref=document.createElement("script");
fileref.setAttribute("type","text/javascript");
// Pick your version here https://getfirebug.com/firebuglite
fileref.setAttribute("src", "http://fbug.googlecode.com/svn/lite/branches/firebug1.4/content/firebug-lite-dev.js");
// Add to DOM
var head = document.getElementsByTagName("head")[0];
head.appendChild(fileref);
}
/* Defaults (supposedly)
saveCookies - false
startOpened - false
startInNewWindow - false
showIconWhenHidden - true
overrideConsole - true
ignoreFirebugElements - true
disableXHRListener - false
disableWhenFirebugActive - true
enableTrace - false
enablePersistent - false
*/
</script>
加载中,请稍侯......
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