Question

我有这个字符串：

var data = "res_per_page=10&page_num=1&location_id=107&location_id=174&location_id=110&location_id=180"

我想将所有'location_id'参数分组为一个，以_分隔。怎么实现呢？结果字符串应如下所示：

var data = "res_per_page=10&page_num=1&location_id=107_174_110_180"

Answer 1

怎么样; （假设id是从1到9位的数字）

var newdata = [];
data = data.replace(/&?location_id=(\d{1,9})/ig, function(m, k, v) {
        newdata.push(k);
        return "";
    });
data += "&location_id=" + newdata.join("_");
alert(data);


in:  "res_per_page=10&page_num=1&location_id=107&location_id=174&location_id=110&location_id=180"
out: "res_per_page=10&page_num=1&location_id=107_174_110_180"

Answer 2

你走了：

var dataInit = "res_per_page=10&page_num=1&location_id=107&"+
               "location_id=174&location_id=110&location_id=180"
               .split('&location_id='),
data = dataInit[0]+'&location_id='+dataInit.slice(1).join('_');

现在data的值是：res_per_page=10&page_num=1&location_id=107_174_110_180

加入并替换多次出现的字符串

2 个答案: