js test jquery code example
Example 1: check if jquery is installed
if (typeof jQuery == "undefined") {
alert("JQuery is not installed");
} else {
alert("JQuery is installed correctly!");
}
Example 2: test if jquery works
/* Answer to: "test if jquery works" */
window.onload = function() {
if (window.jQuery) {
// jQuery is loaded
console.log("jQuery has loaded!");
} else {
// jQuery is not loaded
console.log("jQuery has not loaded!");
}
}