d-image", "url({{ $.Site.Params.images.searchImageL }})");   //默认浅色背景
function switchNightMode(){
    var night = document.cookie.replace(/(?:(?:^|.*;\s*)night\s*\=\s*([^;]*).*$)|^.*$/, "$1") || '0';
    if(night == '0'){
	$("#search-bg").css("background-image", "url({{ $.Site.Params.images.searchImageL }})");
        document.body.classList.remove('io-grey-mode');
        document.body.classList.add('io-black-mode');
        document.cookie = "night=1;path=/"
        console.log(' ');
        $