index.js

function post(url, data, fn) {
    data = data || {};
    var content = require('querystring').stringify(data);
    var parse_u = require('url').parse(url, true);
    var isHttp = parse_u.protocol == 'http:';
    var options = {
        host: parse_u.hostname,
        port: parse_u.port || (isHttp ? 80 : 443),
        path: parse_u.path,
        method: 'POST',
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded',
            'Content-Length': content.length
        }
    };
    var req = require(isHttp ? 'http' : 'https').request(options, function (res) {
        var _data = '';
        res.on('data', function (chunk) {
            _data += chunk;
        });
        res.on('end', function () {
            fn != undefined && fn(_data);
        });
    });
    req.write(content);
    req.end();
}

post('http://localhost:8000', {"username": "test/shiba", "password": "shiba123456",
    "task_name": "testdemo",
    "task_target": "http://shop36493046.taobao.com/?spm=0.0.0.0.OEIEuh",
    "end_time": "2013-07-12",
    "interval": 5,
    "isps": [1, 4, 5],
    "locates": [519]
}, function (data) {
    console.log(data);

});