?? 有關路程、速度、時間的計算.txt
字號:
第一步：把如下代碼加入到<head>區域中
<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：把如下代碼加入到<body>區域中
<h4 align="center">知道路程、速度求時間</h4>
<form>
<table align="center">
<tr>
<td>輸入路程:</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>輸入速度:</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/小時</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>時間:</td>
<td><input type=text name=hourvalue size=5 value="" readonly></td>
<td>小時</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、時間求路程</h4>
<form>
<table align="center">
<tr>
<td>輸入速度:</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/小時</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>輸入時間:</td>
<td>
<input type=text name=hourvalue size=5 value="0" onfocus="clearcell(hourvalue)">
</td>
<td>小時</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 (請選擇單位):</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">知道時間、路程求速度</h4>
<form>
<div align="center">
<table>
<tr>
<td>輸入路程:</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>輸入時間:</td>
<td>
<input type=text name=hourvalue size=5 value="0" onfocus="clearcell(hourvalue)">
</td>
<td>小時</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 (請選擇單位):</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/小時</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>?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -