Include jquery if not included

<!--
	Checks to see if jquery is defined
	If jQuery is NOT detected, include the script.
-->
<script type="text/javascript">
    if(typeof jQuery == 'undefined'){
        var foo = document.createElement("script");
        foo.type = "text/javascript";
        foo.src = "https://code.jquery.com/jquery-1.12.4.min.js"; // add path to jQuery script here
        document.head.insertBefore(foo, document.head.getElementsByTagName("script")[0])
    }
</script>

Similar codes

0 vote224 views1 answer
How to add a button bootstrap
Html
38 votes241 views4 answers
Meta name= viewport
Html
9 votes224 views5 answers
Html text alignment
Html
79 votes232 views6 answers
Bootstrap radio button
Html
0 vote227 views1 answer
Agregar atributo jquery
Html
144 votes227 views6 answers
Javascript redirect
Html
66 votes209 views6 answers
How to reload a page
Html
1 vote216 views1 answer
Void javascript
Html
8 votes206 views5 answers
How to install jquery
Html
0 vote211 views3 answers
Javascript get custom attribute value from element
Html