[英]How do I grab a few inputs from input boxes, place in variables, then output to a span id using HTML & Javascript?
这是我目前正在使用的代码,似乎没有输出任何内容,因此我不确定我要去哪里哪里:
注意:Div“ Calc-Tab-3”开头是隐藏的
码
function myHoursPumpIsRunFunction() { var ThisIsMyHoursRun = document.getElementById("slideRangeHours").value; document.getElementById("myHoursRan").innerHTML = ThisIsMyHoursRun; } function GetTheResults() { var Volts = parseInt(document.getElementById('Volts').value); var Amps = parseInt(document.getElementById('Amps').value); var HoursPumpIsRan = parseInt(document.getElementsById('slideInputValueHours').value); var KwhPerDay = (Volts * Amps) / 1000 * HoursPumpIsRan; document.getElementById("ResultsKwhPerDay").innerHTML = KwhPerDay; }
<div class="Container-1"> Volts: <input type="number" class="tabinput" id="Volts" min="1"> Amps: <input type="number" class="tabinput" id="Amps" min="1"> <span>How many hours do you run your pump for: </span> <span class="slideOutputValueHours" id="myHoursRan">7</span> Hours <input type="range" class="slideInputValueHours slider" id="slideRangeHours" value="7" min="1" max="24" step="1" oninput="myHoursPumpIsRunFunction()"> <input type="button" class="CalcButtons" onclick="document.getElementById('Container-1').style.display='none';document.getElementById('Calc-Tab-3').style.display='block';GetTheResults()" value="Calculate Results"> <div id="Calc-Tab-3"> Total kWh per day: <span id="ResultsKwhPerDay"></span> KWh per day </div> </div>
我的第二个问题是,如果在单击按钮后div类“ Container-1”立即不显示任何内容,我是否仍可以从这些输入框中获取信息?
是的,如果在单击按钮后div类“ Container-1”没有显示任何内容,则可以从这些输入框中获取信息。 您的代码不起作用,因为js中存在多个错误(您始终可以通过在任何浏览器上使用inspect元素功能来检查js错误)。 错误:
这是工作代码链接
Javascript:
function myHoursPumpIsRunFunction() {
var ThisIsMyHoursRun = document.getElementById("slideRangeHours").value;
document.getElementById("myHoursRan").innerHTML = ThisIsMyHoursRun;
}
function GetTheResults() {
document.getElementById('Container-1').style.display='none';
document.getElementById('Calc-Tab-3').style.display='block';
var Volts = parseInt(document.getElementById('Volts').value);
var Amps = parseInt(document.getElementById('Amps').value);
var HoursPumpIsRan =
parseInt(document.getElementById('slideRangeHours').value);
var KwhPerDay = (Volts * Amps) / 1000 * HoursPumpIsRan;
document.getElementById("ResultsKwhPerDay").innerHTML = KwhPerDay;
}
HTML:
<div id="Container-1">
Volts: <input type="number" class="tabinput" id="Volts" min="1"> Amps: <input type="number" class="tabinput" id="Amps" min="1">
<span>How many hours do you run your pump for: </span><span class="slideOutputValueHours" id="myHoursRan">7</span> Hours
<input type="range" class="slideInputValueHours slider" id="slideRangeHours" value="7" min="1" max="24" step="1" oninput="myHoursPumpIsRunFunction();">
<input type="button" class="CalcButtons" onclick="GetTheResults();" value="Calculate Results">
</div>
<div id="Calc-Tab-3" style="display:none;">
Total kWh per day: <span id="ResultsKwhPerDay"></span> KWh per day
</div>
您的代码中有一些错误,您尝试使用document.getElementById()
有些问题,但是您传递的是类,而不是Id。 您打开但忘记关闭的SOme标签,我修复了两个错误。 (我建议开始使用针对JavaScript的调试工具,例如浏览器的DevTools F12,以及这样的HTML验证程序https://validator.w3.org/ )
关于第二个问题,是的,有可能,一个不可见的元素只是不可见,但它仍然存在。
function myHoursPumpIsRunFunction() { var ThisIsMyHoursRun = document.getElementById("slideRangeHours").value; document.getElementById("myHoursRan").innerHTML = ThisIsMyHoursRun; } function GetTheResults() { var Volts = parseInt(document.getElementById('Volts').value); var Amps = parseInt(document.getElementById('Amps').value); var HoursPumpIsRan = parseInt(document.getElementById('slideRangeHours').value); var KwhPerDay = (Volts * Amps) / 1000 * HoursPumpIsRan; document.getElementById("ResultsKwhPerDay").innerHTML = KwhPerDay; } function CalcButtonClick(){ document.getElementById('Container-1').style.display='none'; document.getElementById('Calc-Tab-3').style.display='block'; GetTheResults() }
<div id="Container-1"> Volts: <input type="number" class="tabinput" id="Volts" min="1"> Amps: <input type="number" class="tabinput" id="Amps" min="1"> <span>How many hours do you run your pump for: </span> <span class="slideOutputValueHours" id="myHoursRan">7</span> Hours <input type="range" class="slideInputValueHours slider" id="slideRangeHours" value="7" min="1" max="24" step="1" oninput="myHoursPumpIsRunFunction()"> <input type="button" class="CalcButtons" onclick="CalcButtonClick()" value="Calculate Results"> </div> <div id="Calc-Tab-3"> Total kWh per day: <span id="ResultsKwhPerDay"></span> KWh per day </div>
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