Question

我该怎么做（标题）？

我查看了http://brian.io/lawnchair/plugins/上的插件“docs” 并且我可以看到寻找平等，但我没有看到.indexOf（）

的东西用例：我想搜索包含关键字“obama”的每篇文章的文章数据库至少我想在文章的正文字段中看到每篇文章对象都带有“奥巴马”。

如果有关键字与每篇文章相关联，那么我也可以添加它，我的主要问题就是进行搜索。

Answer 1

我最终使用正则表达式并迭代整个数据库：如果有人有更好的想法或更清晰的代码，请随时贡献。

var lawnchair = Lawnchair({name:'lawnchair'},function(e){
            console.log('storage open');
        });

 $('#search').click(function(e) {
            var search_term = $("#search_field").val();
            var search_type = $('#search_type').val(); 
            var re = new RegExp(search_term, "gi")
            console.log("startings search for "+search_term);
            console.log("startings search for "+re.toString());
            lawnchair.all(function(articles){
                $('#article_list').empty();
                console.log(articles.length);
                var counter = 0;
                for(var i = 0; i<articles.length;i++)
                {
                    cur_a = articles[i].value;
                    if(cur_a["title"] != null){
                        var thing_to_search = "string";
                        if(search_type == "both"){
                            thing_to_search = cur_a["title"]+" "+cur_a["body"];
                        }else if(search_type == "title"){
                            thing_to_search = cur_a["title"];
                        }else if (search_type == "body"){
                            thing_to_search = cur_a["body"];
                        }
                        var matches = thing_to_search.match(re);
                        if (matches != null) 
                        {
                            counter = counter + 1;
                            var lyo = make_article_layout();
                            lyo.find("#title").text(cur_a["title"]);
                            //xrank is the kw density
                            //let title be 10x more important than body
                            var xrank = (1.0 * matches.length) / thing_to_search.length;
                            if(cur_a["title"] != null){
                                var m2 = cur_a["title"].match(re);
                                if(m2 != null){
                                    xrank = (xrank * m2.length)
                                }
                            }
                            lyo.find("#match_count").text(matches.length.toString());
                            lyo.find("#xrank").text(xrank.toString());
                            console.log(cur_a["title"]);
                            //console.log(cur_a["body"]);
                            lyo.id = cur_a["_id"];
                            //lyo.find("#body").text(cur_a["body"]);
                            lyo.find("#published_at").append(" "+cur_a["published_at"]);
                            lyo.find("#author").append(" "+cur_a["author"]);
                            lyo.find("#source").append(" paper_id:"+cur_a["paper_id"]+" | "+cur_a["url"]);
                        }
                    }
                }
                $('#status').text("Results Found:"+counter.toString())
            });
        });

使用lawnchair db的phonegap应用程序的搜索功能

1 个答案: