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const queryString = window.location.search;
const urlParams = new URLSearchParams(queryString);
const param = urlParams.get('param');
          
console.log(param );

oliverll1

<?php 

$post_request = json_decode(file_get_contents('php://input'));
$requestArray = get_object_vars($post_request);

    $data = $requestArray['data'];

?>

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const sendForm = async function(form){
          let XHR = new XMLHttpRequest();
          let FD  = new FormData(form);
    
          
        
           window.location.reload();
           
        

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add_action('template_redirect','my_non_logged_redirect');
function my_non_logged_redirect()
{
	if(is_page('login') || is_page('my-account')){
		return;
	}
     
	if ( !is_user_logged_in() ){
        	ob_clean();

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const isMobile = window.matchMedia("only screen and (max-width: 768px)").matches;

 if (isMobile) {
   console.log("You are on mobile!");
 }

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function runOnScroll() {
    const header = document.getElementById("header");
    const bodyScroll = document.getElementsByTagName("body")[0].scrollTop;
    // Chrome
    const htmlScroll = document.getElementsByTagName("html")[0].scrollTop;
     
    if ( bodyScroll >= 400 || htmlScroll >= 400) {
        header.style.background = "#615e5d";
    }
    else{