Shell/Bash: check if jquery is installed Example

By

Shell/Bash Example: This is the "check if jquery is installed" Example. compiled from many sources on the internet by SimpleTutorials.org

check if jquery is loaded 

$(document).ready(function(){
  if (jQuery) {  
    // jQuery is loaded  
    alert("Yeah!");
  } else {
    // jQuery is not loaded
    alert("Doesn't Work");
  }
});

check if jquery is installed 

if (typeof jQuery == "undefined") {
  alert("JQuery is not installed");
} else {
  alert("JQuery is installed correctly!");
}

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!");
    }
}

how to check if jquery is loaded 

window.onload = function() {
    if (window.jQuery) {  
        // jQuery is loaded  
        alert("Yeah!");
    } else {
        // jQuery is not loaded
        alert("Doesn't Work");
    }
}



* Summary: This "check if jquery is installed" Shell/Bash Example is compiled from the internet. If you have any questions, please leave a comment. Thank you!

Others