JSQL运用案例：基于客户端的成绩统计 _JavaScript

JSQL应用案例：基于客户端的成绩统计

下面我把整个example的代码贴出来，
欢迎拍砖：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Marks Count</title>
<script type="text/javascript" src="../src/YESBRAIN.js"></script>
<script type="text/javascript" src="../src/JSQL.js"></script>
<script type="text/javascript" src="../src/JSQL-Memory.js"></script>
<script type="text/javascript" src="../src/JSQL-DOM.js"></script>
<style>
	#marks input {
		width: 100px;
	}
</style>

</head>
<body>
<center>
<h1>Marks Count</h1>
<p>
	<button onclick="insertline();"> Add one line </button>
	<button onclick="savemarks();"> Save Changes </button>
	<span>By<span>

	<select id="byfield">
		<option value="chinese" selected="selected">Chinese</option>
		<option value="math">Math</option>
		<option value="english">English</option>
	</select>
	<select id="ascdesc">
		<option value="desc" selected="selected">Desc</option>

		<option value="asc">Asc</option>
	</select>
	<button onclick="order();">Order</button>
</p>
<form name="marks" id="marks">
	<span>Name:</span>
	<input type="text" id="name[1]" value="zhangsan">
	<span>Sex:</span>

	<input type="text" id="sex[1]" value="female">
	<span>Chinese:</span>
	<input type="text" id="chinese[1]" value="96">
	<span>Math:</span>
	<input type="text" id="math[1]" value="94">
	<span>English:</span>
	<input type="text" id="english[1]" value="98">

	<br>
</form>
</center>

<script type="text/javascript">
	var marks = [
					{
						name: 'Lisi',
						sex: 'Female',
						chinese: '88',
						math: '90',
						english: '92'
					},
					{
						name: 'Wangwu',
						sex: 'Female',
						chinese: '92',
						math: '80',
						english: '82'
					},
					{
						name: 'Lilei',
						sex: 'Female',
						chinese: '93',
						math: '88',
						english: '87'
					},
					{
						name: 'HanMeimei',
						sex: 'Male',
						chinese: '97',
						math: '92',
						english: '100'
					},	
					{
						name: 'Wangjuan',
						sex: 'Male',
						chinese: '92',
						math: '93',
						english: '90'
					}				
	];
	
	function addto(index,name,sex,chinese,math,english) {
		"insert into marks (nodename,innerHTML) values ('span','Name:')".ForDOM().execute();
		("insert into marks (nodename,type,id,value) values ('input','text','name[" + (index) + "]','" + name + "')").ForDOM().execute();
		"insert into marks (nodename,innerHTML) values ('span','Sex:')".ForDOM().execute();
		("insert into marks (nodename,type,id,value) values ('input','text','sex[" + (index) + "]','" + sex + "')").ForDOM().execute();
		"insert into marks (nodename,innerHTML) values ('span','Chinese:')".ForDOM().execute();
		("insert into marks (nodename,type,id,value) values ('input','text','chinese[" + (index) + "]','" + chinese + "')").ForDOM().execute();
		"insert into marks (nodename,innerHTML) values ('span','Math:')".ForDOM().execute();
		("insert into marks (nodename,type,id,value) values ('input','text','math[" + (index) + "]','" + math + "')").ForDOM().execute();	
		"insert into marks (nodename,innerHTML) values ('span','English:')".ForDOM().execute();
		("insert into marks (nodename,type,id,value) values ('input','text','english[" + (index) + "]','" + english + "')").ForDOM().execute();
		("insert into marks (nodename) values ('br')").ForDOM().execute();		
	};
	
	for(var i=0; i<marks.length;i++) {
		addto(i+2,marks[i].name,marks[i].sex,marks[i].chinese,marks[i].math,marks[i].english);
	};
	
	function insertline() {
		var count = "select count(*) as Count from marks where id like 'name%'".ForDOM().query();
		var index = count[0].Count + 1;
		addto(index,"","","","","");
	};
	
	function dellastline() {
		var count = "select count(*) as Count from marks where id like 'name%'".ForDOM().query();
		var index = count[0].Count;
		("delete from marks where id like '%["+ index +"]'").ForDOM().execute();
	};
	
	"create table savedmarks".execute();
	
	function savemarks() {
		var names = ("select value from marks where id like 'name%'").ForDOM().query();
		var sexs = ("select value from marks where id like 'sex%'").ForDOM().query();
		var chineses = ("select value from marks where id like 'chinese%'").ForDOM().query();
		var maths = ("select value from marks where id like 'math%'").ForDOM().query();
		var englishs = ("select value from marks where id like 'english%'").ForDOM().query();
		"delete from savedmarks".execute();
		for(var i=0;i<names.length;i++) {
			("insert into savedmarks (name,sex,chinese,math,english) values ('"+ names[i].value +"','" + sexs[i].value + "'," + chineses[i].value + "," + maths[i].value + "," + englishs[i].value + ")").execute();
		};
		//alert(savedmarks);
	};
	
	function orderby(field,asc) {
		savemarks();
		var marks = ("select * from savedmarks order by " + field + " " + asc).query();
		"delete from marks".ForDOM().execute();
		for(var i=0; i<marks.length;i++) {
			addto(i+2,marks[i].name,marks[i].sex,marks[i].chinese,marks[i].math,marks[i].english);
		};
	};
	function order() {
		var byfield = document.getElementById("byfield").value;
		var ascdesc = document.getElementById("ascdesc").value;
		orderby(byfield,ascdesc);
	};
</script>

</body>
</html>
主要用到四个JS库，其中YESBRAIN.js是基库，JSQL.js是接口。JSQL-Memory.js和JSQL-DOM分别是JSQL对 javascript Objects Array 和 Html DOM 的 SQL 实现。