查看响应式Web设计的完整网站

I使用代码更改元视口

if( /Android|webOS|iPhone|iPad|iPod|BlackBerry/i.test(navigator.userAgent) ) {    
    var answer = confirm('Would you like to switch to the mobile version of kk');
    if (!sessionStorage.alreadyClicked) {
        if (answer)
        {
          console.log('yes');     
        }
        else
        {
          console.log('cancel');
           viewport = document.querySelector("meta[name=viewport]");
           viewport.setAttribute('content', 'width=device-width, initial-scale=0, maximum-scale=1.0, user-scalable=0');   
           //window.location = window.location.origin;  
        }
    }
}

如何在页面重新加载后保持元视口不变？