搜索框提示按钮

gistfile1.js

/* 搜索框 */
if( $('.search').length != 0){
	var search = $('.search');
	var search_enter = $('.search_enter');
	search_enter.hide();
	search.on({
		keyup : function(){
			console.log('keyup');
			search.val().length != 0 ? search_enter.show() : search_enter.hide();
		},
		change : function(){
			console.log('change');
			search.val().length != 0 ? search_enter.show() : search_enter.hide();
		}
	});
}