html if 條件敘述

script if 條件判斷式

<if condition="條件"> { ....... }
        <else> { ....... }

<if condition="條件"> { ....... }
        <elseif condition="條件"/> { ....... }
        <elseif condition="條件"/> { ....... }

<script language="javascript">
var Number=0;
switch (Number) {
case 0: x="Number 是 0";
     　     　  break;
case 1: x="Number 是 1";
     　     　  break;
default: x="沒有符合的條件";
}
document.write(x);
</script>

<script language="javascript">
var i=0;
while( i<10 ) {
　document.write(i);
　i++;
}
</script>

<table border="1" width="500px" > <tbody> <tr><td width="70px" > <input id="T1" type="number" size="2" value="1" onmouseover="this.select()" onchange="Outt(this.value);this.select()"/> </td><td> <div id = "out1"></div> </td></tr> </tbody></table> <font size='5'><br> ﹤input onchange="Outt(this.value);this.select()"/> <br> ﹤script><br> function Outt(x) { <br> var txt = ""; <br> if(x < 0) {txt += x + " < 0 ﹤br>" }<br> if(x < 10){txt += x +" < 10 ﹤br> " }<br> if(x < 100){txt += x +" < 100 ﹤br>" }<br> else { txt += x +" > 100 <br>"} out1.innerHTML = txt <br> } <br> ﹤/script> <br> <script> function Outt(x) { var txt = ""; if(x < 0) {txt += x + " < 0 <br>" } if(x < 10){txt += x +" < 10 <br> " } if(x < 100){txt += x +" < 100 <br>" } else { txt += x +" > 100 <br>"} out1.innerHTML = txt } </script>

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<table border="1" width="500px" > <tbody> <tr><td width="400px" > <input onclick="Fif(this.value)" type="button" value="10" /> <input onclick="Fif(this.value)" type="button" value="30" /> <input onclick="Fif(this.value)" type="button" value="60" /> <input onclick="Fif(this.value)" type="button" value="90" /> <input onclick="Fif(this.value)" type="button" value="??" /> </td><td> <div id="txt"> </div> </td></tr> </tbody> </table> <br> <font size='5'> button onclick="Fif(this.value)"<br><br> ﹤script><br> function Fif(x) { <br> x =(x==10)?"x = 10":(x==30)?"x = 30":(x==60)?"x = 60":(x==90)?"x = 90":"x = ??"; <br>txt.innerHTML =x; }<br> ﹤/script> <script type="text/javascript"> function Fif(x) { x =(x==10)?"x = 10":(x==30)?"x = 30":(x==60)?"x = 60":(x==90)?"x = 90":"x = ??"; txt.innerHTML = x; } </script>

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<input onclick="Fif(this.value)" type="button" value="10" /> <input onclick="Fif(this.value)" type="button" value="30" /> <input onclick="Fif(this.value)" type="button" value="60" /> <input onclick="Fif(this.value)" type="button" value="90" /> <input onclick="Fif(this.value)" type="button" value=" " /> <div id="if"></div> <font size='5'> button onclick="Fif(this.value)"<br><br> ﹤script><br> function Fif(x) { <br> (x==10)?alert(10):(x==30)?alert(30):(x==60)?alert(60):(x==90)?alert(90):"??"; } <br> </script> <script type="text/javascript"> function Fif(x) { (x==10)?alert(10):(x==30)?alert(30):(x==60)?alert(60):(x==90)?alert(90):alert( ); } </script>

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