Javascript使用post方法提交数据

http://www.oschina.net/code/snippet_28910_5253?_t_t_t=0.268690651472958

var jsPost = function (action, values) {
    var id = Math.random();
    document.write( '<form id="post' + id + '" name="post' + id + '" action="' + action + '" method="post">' );
    for ( var key in values) {
        document.write( '<input type="hidden" name="' + key + '" value="' + values[key] + '" />' );
    }
    document.write( '</form>' );
    document.getElementById( 'post' + id).submit();
}

jsPost( 'b.html' , {
    'username' : 'zhangsan' ,
    'password' : '123'
});