Creating a Live Score Board Client Logic

The the custom JavaScript object player is defined as below.

function player () {
	
	this.name = '';
	this.serving = false;
	this.gamepoint = 0;
	this.sets = new Array();
	
	this.toString = function() {
		return (this.name + ": " + (this.serving ? 'Serving' : 'Facing') + "\n" + this.sets + "\n" + this.gamepoint);
	}
}

The sets member variable is an array.


Next comes the import updateScoreBoard function

function updateScoreBoard() {
	sc = xmlScore;
	pDOM = sc.getElementsByTagName("player");
	players = new Array();
	for (i=0; i<pDOM.length; i++) {
		players[i] = new player(pDOM[i].getAttribute("name"));
		players[i].name = pDOM[i].getAttribute("name");
		if (pDOM[i].getAttribute("serving") == 1) {
			players[i].serving = true;
		}
		// Now get the match sets for the players
		setDOM = pDOM[i].getElementsByTagName("set");
		for (j=0; j<setDOM.length; j++) {
			players[i].sets[j] = setDOM[j].childNodes[0].nodeValue;

			// Now get the curent Game point for the players
			players[i].gamepoint = pDOM[i].getElementsByTagName("gamepoints")[0].childNodes[0].nodeValue;
		}


//		alert(players[i].toString());
	}

	// Now that all data has been gathered...
	document.getElementById("player1").innerHTML = players[0].name;
	document.getElementById("matchplayer1").innerHTML = players[0].name;
	document.getElementById("player2").innerHTML = players[1].name;
	document.getElementById("matchplayer2").innerHTML = players[1].name;

	//Serving
//	document.getElementById("serving1").innerHTML = (players[0].serving)?'o':'';
//	document.getElementById("serving2").innerHTML = (players[1].serving)?'o':'';

	// Sets
	document.getElementById("setplay11").innerHTML = players[0].sets[0];
	document.getElementById("setplay12").innerHTML = players[0].sets[1];
	document.getElementById("setplay13").innerHTML = players[0].sets[2];
	document.getElementById("setplay21").innerHTML = players[1].sets[0];
	document.getElementById("setplay22").innerHTML = players[1].sets[1];
	document.getElementById("setplay23").innerHTML = players[1].sets[2];

	// Game points
	document.getElementById("gamepoints1").innerHTML = players[0].gamepoint;
	document.getElementById("gamepoints2").innerHTML = players[1].gamepoint;
}
</script>

Notice the players variable is an array of player object. The traversing of XML content is easy. If you are unable to understand JavaScript DOM methods check following links

You can find a full working example here, Live Score Board

2 thoughts on “Creating a Live Score Board Client Logic”

  1. Hi rituraj,

    I am trying this code on localhost but it gives this message
    “There was a proublem retrieving the xml data”

    can you please explain why this is comming and how can i resolve it

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