📄 有关路程、速度、时间的计算.txt

📁 JavaScript特效（新）这里有许多的JAVA特效.供学者参考
💻 TXT
字号:

第一步：把如下代码加入到<head>区域中

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function calculatetime(form) {
//  get conversion factors from selected options
var i = form.distunits.selectedIndex;
var distunitsvalue = form.distunits.options[i].value; 
var j = form.speedunits.selectedIndex;
var speedunitsvalue = form.speedunits.options[j].value;
//  calculate time in seconds    
form.secondvalue.value = (form.distvalue.value * distunitsvalue) / (form.speedvalue.value * speedunitsvalue);
//  convert to hours, minutes, seconds    
form.hourvalue.value = parseInt(form.secondvalue.value / 3600);
form.secondvalue.value = form.secondvalue.value - (form.hourvalue.value * 3600);
form.minutevalue.value = parseInt(form.secondvalue.value / 60);
form.secondvalue.value = parseInt(form.secondvalue.value - (form.minutevalue.value * 60));
return true;
}
function calculatedistance(form) {
//  get conversion factors from selected options
var i = form.distunits.selectedIndex;
var distunitsvalue = form.distunits.options[i].value; 
var j = form.speedunits.selectedIndex;
var speedunitsvalue = form.speedunits.options[j].value;
//  convert time to seconds
var temp = ((parseFloat(form.hourvalue.value) * 3600) + (parseFloat(form.minutevalue.value) * 60) + parseFloat(form.secondvalue.value));
//  calculated distance
form.distvalue.value = ((form.speedvalue.value * speedunitsvalue) * temp) / distunitsvalue; 
return true;
}
function calculatespeed(form) {
//  get conversion factors from selected options
var i = form.distunits.selectedIndex;
var distunitsvalue = form.distunits.options[i].value; 
var j = form.speedunits.selectedIndex;
var speedunitsvalue = form.speedunits.options[j].value;
//  convert time to seconds
var temp = ((parseFloat(form.hourvalue.value) * 3600) + (parseFloat(form.minutevalue.value) * 60) + parseFloat(form.secondvalue.value));
//  calculate speed
form.speedvalue.value = ((form.distvalue.value * distunitsvalue)  / (temp * speedunitsvalue)); 
return true;
}
function clearcell(cell) {
cell.value = "";
return true;
}
//  End -->
</script>


第二步：把如下代码加入到<body>区域中

<h4 align="center">知道路程、速度求时间</h4>
<form>
  <table align="center">
    <tr>
      <td>输入路程:</td> 
<td><input type=text name=distvalue size=15 value="1" onfocus="clearcell(distvalue)"></td>
<td><select name=distunits>
          <option value="1">米</option>
          <option value="0.001">毫米</option>
          <option value="0.01">厘米</option>
          <option value="1000">公里</option>
          <option value="0.0254">Inches </option>
          <option value="0.3048">Feet </option>
          <option value="0.9144">Yards </option>
          <option value="1.8288">Fathoms </option>
          <option value="1609.344">Statute Miles </option>
          <option value="1852">Nautical Miles </option>
          <option value="9460000000000000">Light Year </option>
        </select>
</td>
</tr>
<tr>
      <td>输入速度:</td> 
<td><input type=text name=speedvalue size=15 value="1" onfocus="clearcell(speedvalue)"></td>
<td><select name=speedunits>
          <option value="1">米/秒</option>
          <option value="0.277777777777777777777777777777777777">公里/小时</option>
          <option value="0.3048">Feet per Second </option>
          <option value="0.00508">Feet per Minute </option>
          <option value="0.01524">Yard per Minute </option>
          <option value="0.44704">Statute Mile per Hour </option>
          <option value="0.514444444444">Knot </option>
        </select></td>
</tr>
</table>
  <table align="center">
    <tr>
      <td>时间:</td>
<td><input type=text name=hourvalue size=5 value="" readonly></td>
      <td>小时</td>
<td><input type=text name=minutevalue size=5 value="" readonly></td>
      <td>分</td>
<td><input type=text name=secondvalue size=5 value="" readonly></td>
      <td> 秒</td>
</tr>
</table>
  <div align="center">
    <input type=button value="求值" onClick='calculatetime(this.form)'>
  </div>
</form>
<hr>
<h4 align="center">知道速度、时间求路程</h4>
<form>
  <table align="center">
    <tr>
      <td>输入速度:</td> 
<td><input type=text name=speedvalue size=15 value="1" onfocus="clearcell(speedvalue)"></td>
<td><select name=speedunits>
          <option value="1">米/秒</option>
          <option value="0.277777777777777777777777777777777777">公里/小时</option>
          <option value="0.3048">Feet per Second </option>
          <option value="0.00508">Feet per Minute </option>
          <option value="0.01524">Yard per Minute </option>
          <option value="0.44704">Statute Mile per Hour </option>
          <option value="0.514444444444">Knot </option>
        </select></td>
</tr>
</table>
  <div align="center"></div>
  <div align="center">
    <table>
      <tr> 
        <td>输入时间:</td>
        <td>
          <input type=text name=hourvalue size=5 value="0" onfocus="clearcell(hourvalue)">
        </td>
        <td>小时</td>
        <td>
          <input type=text name=minutevalue size=5 value="0" onfocus="clearcell(minutevalue)">
        </td>
        <td>分</td>
        <td>
          <input type=text name=secondvalue size=5 value="0" onfocus="clearcell(secondvalue)">
        </td>
        <td>秒</td>
      </tr>
    </table>
    <table>
      <tr> 
        <td>路程 (请选择单位):</td>
        <td>
          <input type=text name=distvalue size=15 value="" readonly>
        </td>
        <td>
          <select name=distunits>
            <option value="1">米</option>
            <option value="0.001">毫米</option>
            <option value="0.01">厘米</option>
            <option value="1000">公里</option>
            <option value="0.0254">Inches </option>
            <option value="0.3048">Feet </option>
            <option value="0.9144">Yards </option>
            <option value="1.8288">Fathoms </option>
            <option value="1609.344">Statute Miles </option>
            <option value="1852">Nautical Miles </option>
            <option value="9460000000000000">Light Year </option>
          </select>
        </td>
      </tr>
    </table>
    <input type=button value="求值" onClick="calculatedistance(this.form)">
  </div>
</form>
<hr>
<h4 align="center">知道时间、路程求速度</h4>
<form>
  <div align="center">
    <table>
      <tr> 
        <td>输入路程:</td>
        <td>
          <input type=text name=distvalue size=15 value="1" onfocus="clearcell(distvalue)">
        </td>
        <td>
          <select name=distunits>
            <option value="1">米</option>
            <option value="0.001">毫米</option>
            <option value="0.01">厘米</option>
            <option value="1000">公里</option>
            <option value="0.0254">Inches </option>
            <option value="0.3048">Feet </option>
            <option value="0.9144">Yards </option>
            <option value="1.8288">Fathoms </option>
            <option value="1609.344">Statute Miles </option>
            <option value="1852">Nautical Miles </option>
            <option value="9460000000000000">Light Year </option>
          </select>
        </td>
      </tr>
    </table>
    <table>
      <tr> 
        <td>输入时间:</td>
        <td>
          <input type=text name=hourvalue size=5 value="0" onfocus="clearcell(hourvalue)">
        </td>
        <td>小时</td>
        <td>
          <input type=text name=minutevalue size=5 value="0" onfocus="clearcell(minutevalue)">
        </td>
        <td>分</td>
        <td>
          <input type=text name=secondvalue size=5 value="0" onfocus="clearcell(secondvalue)">
        </td>
        <td>秒</td>
      </tr>
    </table>
    <table>
      <tr> 
        <td>速度 (请选择单位):</td>
        <td>
          <input type=text name=speedvalue size=15 value="1" readonly>
        </td>
        <td>
          <select name=speedunits>
            <option value="1">米/秒</option>
            <option value="0.277777777777777777777777777777777777">公里/小时</option>
            <option value="0.3048">Feet per Second </option>
            <option value="0.00508">Feet per Minute </option>
            <option value="0.01524">Yard per Minute </option>
            <option value="0.44704">Statute Mile per Hour </option>
            <option value="0.514444444444">Knot </option>
          </select>
        </td>
      </tr>
    </table>
    <input type=button value="求值" onClick="calculatespeed(this.form)">
  </div>
</form>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -