ndex');?>?focus=" + focus+"&keywords=" + encodeURI($.trim(keywords)); return false; } document.getElementById('toSubmit').onclick = function() { var keywords = $('input[name="subm"]').val(); if ($.trim(keywords)== '') { alert('请输入搜索关键字'); $('input[name="subm"]').focus(); $('input[name="subm"]').val(''); $('input[name="subm"]').attr('placeholder', '请输入搜索关键字'); return false; } window.location.href = "/search.html?keywords=" + encodeURI($.trim(keywords)); return false; }