I'm trying to append a jQuery script with src attributes in my head tag when the window size is less of 580px.
I try with this code:
<script>
$(document).ready(function(){
var windowSize = $(window).width();
if( windowSize > 300 && windowSize < 570) {
$('head').append('<script src=\"http://code.jquery.com/jquery-1.11.3.min.js\" type="text/javascript\"><\/script>');
}
});
</script>
But it seems it doesn't work. Instead, I put inside the script a simple alert and it works:
<script>
$(document).ready(function(){
var windowSize = $(window).width();
if( windowSize > 300 && windowSize < 570) {
$('head').append('<script>alert("hi");<\/script>');
}
});
</script>
I think the problem is the src="". What am I supposed to do?
I see 2 problems with this code:
1) You are using jQuery syntax in your script block to add a reference to load jQuery? This will NOT work unless you already have a copy of jQuery loaded somewhere and are trying to use this code to update it to something else for some reason.
2) I see you are escaping the "
like so: \\"
in your first example. You DO NOT need to do that in jQuery, assuming issue 1 is not really an issue or resolved. jQuery will properly handle double quotes inside a single quote or vice versa.
This is old school lession
function loadScript(url, callback){
var head = document.getElementsByTagName('head')[0];
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = url;
// Then bind the event to the callback function.
// There are several events for cross browser compatibility.
script.onreadystatechange = callback;
script.onload = callback;
// Fire the loading
head.appendChild(script);
}
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