javascript-programes/switch.html at master · VinayManyam/javascript-programes · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script>
function selectproduct()
{
unhide=document.getElementById("details");
unhide.style.display="block";
products=[
{ProductId:1,ProductName:"TV",ProducPrice:2000,Photo:"1.png"},
{ProductId:2,ProductName:"shoe",ProducPrice:1000,Photo:"2.png"}
];
product=document.getElementById("1stproduct");
pic=document.getElementById("pic");
prodid=document.getElementById("proid");
prodname=document.getElementById("pordname");
prodprice=document.getElementById("prodprice");


switch(product.value)
{
case "tv":
pic.src=products[0].Photo;
prodid.innerHTML=products[0].ProductId;
prodname.innerHTML=products[0].ProductName;
prodprice.innerHTML=products[0].ProducPrice;
break;

case "shoe":
pic.src=products[1].Photo;
prodid.innerHTML=products[1].ProductId;
prodname.innerHTML=products[1].ProductName;
prodprice.innerHTML=products[1].ProducPrice;
break;

default:
alert("please select a product");
unhide.style.display="none";
break;


}

}
</script>
</head>
<body>

<form>
<div align="center">
<select id="1stproduct" onchange="selectproduct()">
<option value="-1">select product</option>
<option value="tv">samsung TV</option>
<option value="shoe">nike shoe</option>
</select>


</div>

</form>

<br><br>

<div id="details" align="center" style="display:none">

<table border="1">
<tr><td><img id="pic" width="300" height="300"></td>
<td align="center" width="200">
<table>
<tr><td>Name:</td><td id="pordname"></td></tr>
<tr><td>Id:</td><td id="proid"></td></tr>
<tr><td>Price:</td><td id="prodprice"></td></tr>
</table>
</td>


</tr>


</table>
</div>


<!--
switch:
1.it is a desition making statement that exicutes a block of code which matches the given condition un like the of stetemnet it will not traslate or compile
every logic that doesnt matches the condtion.
the block of code to exicute is defined with a case startement and default containes statements to exicute when the switch value is not matching with
any one of the case

   exprestion
      |
	case 2->code 1  ---- |
	  |					 |
	case 2->code 2  ---- |
	 |					 |
	case 3->code 3 ----	 |
	 |					 |
	case 4->code 4 ----	 |
	 |					 |
	 |->defult-> code n-------exit

	 switch(exprestion)
	 {
	 case content-excpression
			statement;
			break;

			defult:
			statements;
			break;

	 }


-->


</body>
</html>