/*

    函数:格式化字符串

    参数：str:字符串模板； data:数据

    调用方式:formatString("api/values/{id}/{name}",{id:101,name:"test"});

             formatString("api/values/{0}/{1}",101,"test");
　　****字符串中需要替换的数据用 {} 括起来，注意花括号里面不能有空格，data建议使用自定义对象，也就是python中的字典

*/

function formatString(str, data) {

    if (!str || data == undefined) {

        return str;

    }

    if (typeof data === "object") {

        for (var key in data) {

            if (data.hasOwnProperty(key)) {

                str = str.replace(new RegExp("\{" + key + "\}", "g"), data[key]);

            }

        }

    } else {

        var args = arguments,

            reg = new RegExp("\{([0-" + (args.length - 1) + "])\}", "g");

        return str.replace(reg, function(match, index) {

            return args[index - (-1)];

        });

    }

    return str;

}

text_str = "<tr>

            <th>{id}</th>

            <th>{name}</th>

             <th>{author}</th>

             <th>{publish}</th>

            </tr>"

 data = {"id":1,"name":"金瓶","author":"小强","publish":"西北出版社"};

new_str = formatString(str, data)

## new_str ===> "<tr>

            <th>1</th>

            <th>'金瓶'</th>

            <th>"小强"</th>

             <th>"西北出版社"</th>

            </tr>"