Submit form via Javascript

form_submit.js

jQuery(document).ready(function($){
    function post(path, params, method) {
	    method = method || "post"; // Set method to post by default if not specified.

	    // The rest of this code assumes you are not using a library.
	    // It can be made less wordy if you use one.
	    var form = document.createElement("form");
	    form.setAttribute("method", method);
	    form.setAttribute("action", path);

	    for(var key in params) {
	        if(params.hasOwnProperty(key)) {
	            var hiddenField = document.createElement("input");
	            hiddenField.setAttribute("type", "hidden");
	            hiddenField.setAttribute("name", key);
	            hiddenField.setAttribute("value", params[key]);

	            form.appendChild(hiddenField);
	        }
	    }
	    var submitbtn = document.createElement("input");
	    submitbtn.setAttribute("type", "hidden");
	    submitbtn.setAttribute("name", "submitAd");
	    form.appendChild(submitbtn);
	    document.body.appendChild(form);
	    // console.log("form:",form);
	    // return;
	    form.submit();
	}
    
//     To use method
    let params = {"option":"value"};
    let path = ""; //url for form Action
    post(path,params,"POST");
});