Question

I have a jquery1.js file that conflicts with another jquery2.js file intermittently. I would like to load the second jquery file only if the first is not present, because the modules that need these display intermittently throughout the site. So is it possible to search for at least the string or inner html in javascript and make a decision on that finding?

i.e. (in pseudocode)

if (jquery1 exists){do nothing}
else{document.write('<script>/jquery2.js</script>')}

or something along these lines.

Answer 1

Have you considered using a script loader like YepNope to manage this sort of dependancy?

yepnope({
    test: window.jQuery,
    nope: 'jquery2.js',
    complete: function () {
        // Initialise any dependant scripts
    }
});