how to set background automatically with my screen height


html {
background: url(image.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}

body {

  background-image: url("img_tree.gif");

  background-repeat: no-repeat;  
background-attachment: fixed;

background-position: top center;
background-size: contain;

}

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How to send JSON Web Token (JWT Token) as header with Postman and golang


func ProtectedEndpoint(w http.ResponseWriter, req *http.Request) {
params := req.URL.Query()
token, _ := jwt.Parse(params["token"][0], func(token *jwt.Token) (interface{}, error) {
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("There was an error")
}
return []byte("secret"), nil
})
if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
var user User
mapstructure.Decode(claims, &user)
json.NewEncoder(w).Encode(user)
} else {
json.NewEncoder(w).Encode(Exception{Message: "Invalid authorization token"})
}
}

func CreateTokenEndpoint(w http.ResponseWriter, req *http.Request) {
var user User
_ = json.NewDecoder(req.Body).Decode(&user)
token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
"username": user.Username,
})
tokenString, error := token.SignedString([]byte("secret"))
if error != nil {
fmt.Println(error)
}
json.NewEncoder(w).Encode(JwtToken{Token: tokenString})
}

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How to scan a folder for documents with javascript


var dir = "/videos";
var fileextension = ".mp4";
$.ajax({
//This will retrieve the contents of the folder if the folder is configured as 'browsable'
url: dir,
success: function (data) {
// List all mp4 file names in the page
$(data).find("a:contains(" + fileextension + ")").each(function () {
var filename = this.href.replace(window.location.host, "").replace("http:///", "");
$("body").append($("<img src=" + dir + filename + "></img>"));
});
}
});

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