var count=99999;
function nIfElseTest(num)
{
var dBegin=new Date;
//进⾏
var iNum=0;
for(var i=0;i<count;i++)
{
if(num==0)
{
iNum=0;
}
else if(num==1)
{
iNum=0;
}
else if(num==2)
{
iNum=0;
}
else if(num==3)
{
iNum=0;
}
else if(num==4)
{
iNum=0;
}
else if(num==5)
{
iNum=0;
switch case判断字符串}
else if(num==6)
{
iNum=0;
}
else if(num==7)
{
iNum=0;
}
else if(num==8)
{
iNum=0;
}
else if(num==9)
{
iNum=0;
}
else if(num==10)
{
iNum=0;
}
else if(num==11)
{
iNum=0;
}
else if(num==12)
{
iNum=0;
}
else if(num==13)
{
iNum=0;
}
else if(num==14)
{
iNum=0;
}
else if(num==15)
{
iNum=0;
}
else if(num==16)
{
iNum=0;
}
else if(num==17)
{
iNum=0;
}
else if(num==18)
{
iNum=0;
}
}
var dEnd=new Date;
document.write("if...else耗时"+(Time()-Time())+"毫秒"+",num="+num+"<a href='javascript:history.back()'>继续测试</a>");
}
function nSwitchCaseTest(num)
{
var dBegin=new Date;
//进⾏
for(var i=0;i<count;i++)
{
switch(num)
{
case 0:
iNum=0;break;
case 1:
iNum=0;break;
case 2:
iNum=0;break;
case 3:
iNum=0;break;
case 4:
iNum=0;break;
case 5:
iNum=0;break;
case 6:
iNum=0;break;
case 7:
iNum=0;break;
case 8:
iNum=0;break;
case 9:
iNum=0;break;
case 10:
iNum=0;break;
case 11:
iNum=0;break;
case 12:
iNum=0;break;
case 13:
iNum=0;break;
case 14:
iNum=0;break;
case 15:
iNum=0;break;
case 16:
iNum=0;break;
case 17:
iNum=0;break;
case 18:
iNum=0;break;
default:
}
}
var dEnd=new Date;
document.write("switch_case耗时"+(Time()-Time())+"毫秒"+",num="+num+"<a href='javascript:history.back()'>继续测试</a>");
}
</script>
</head>
<body>
<button onClick="javaScript:nIfElseTest(0)">if0</button>
<button onClick="javaScript:nIfElseTest(2)">if2</button>
<button onClick="javaScript:nIfElseTest(4)">if4</button>
<button onClick="javaScript:nIfElseTest(6)">if6</button>
<button onClick="javaScript:nIfElseTest(8)">if8</button>
<button onClick="javaScript:nIfElseTest(10)">if10</button>
<button onClick="javaScript:nIfElseTest(12)">if12</button>
<button onClick="javaScript:nIfElseTest(14)">if14</button>
<button onClick="javaScript:nIfElseTest(16)">if16</button>
<button onClick="javaScript:nIfElseTest(18)">if18</button>
<p><a href="www.dreamdu/javascript/switch_case/"&ase</a>测试</p>
<button onClick="javaScript:nSwitchCaseTest(0)">switch0</button>
<button onClick="javaScript:nSwitchCaseTest(2)">switch2</button>
<button onClick="javaScript:nSwitchCaseTest(4)">switch4</button>
<button onClick="javaScript:nSwitchCaseTest(6)">switch6</button>
<button onClick="javaScript:nSwitchCaseTest(8)">switch8</button>
<button onClick="javaScript:nSwitchCaseTest(10)">switch10</button>
<button onClick="javaScript:nSwitchCaseTest(12)">switch12</button>
<button onClick="javaScript:nSwitchCaseTest(14)">switch14</button>        <button onClick="javaScript:nSwitchCaseTest(16)">switch16</button>        <button onClick="javaScript:nSwitchCaseTest(18)">switch18</button>

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