cript>var dfdPrompt=null;var installPromptDiv=document.getElementById('install-prompt');function shouldShowInstallPrompt(){const oneDay=168*60*60*1000;const lastClosed=localStorage.getItem('installPromptClosed');if(lastClosed){const now=Date.now();return now-lastClosed>oneDay}return true}function showInstallPrompt(){if(dfdPrompt&&shouldShowInstallPrompt()){installPromptDiv.style.display='block'}}function closePrompt(){installPromptDiv.style.display='none';localStorage.setItem('installPromptClosed',Date.now())}window.addEventListener('beforeinstallprompt',function(e){dfdPrompt=e;e.preventDefault();showInstallPrompt()});function addToDesktop(){if(dfdPrompt){dfdPrompt.prompt();dfdPrompt.userChoice.then(function(choiceResult){console.log(choiceResult.outcome);closePrompt();dfdPrompt=null})}else{console.log('添加到主屏幕的功能不可用。')}}window.onload=showInstallPrompt;
