node.js·创建http服务请求

var httpReauire = require('http'); //引入模块
httpReauire.createServer(function(reauire, response) {
	
	response.writeHead(200, {//请求头
		'Content-Type': 'text/plain'
	});
	
	
	//发送数据
	response.end('第一个http服务');

}).listen(5249); //端口
console.log("运行了");

//输出字母 Buffer.alloc(26); 是固定的
var buf = Buffer.alloc(26);
var bufx = Buffer.alloc(26);
for (var i = 0; i < 26; i++) {
	buf[i] = i + 65;
	bufx[i] = i + 97;
}
console.log(buf.toString()); //ABCDEFGHIJKLMNOPQRSTUVWXYZ
console.log(bufx.toString()); abcdefghijklmnopqrstuvwxyz