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你能帮忙吗？我现在有一个表格，它采用框 1、2 和 3 中的内容并将它们相乘并给出答案。我有一个单独的函数和表格减去框 4-11（从代码中可以看出）。我需要帮助的是创建一个可以采用第二个函数并从第一个函数中减去它的函数。

如果有助于解释我在做什么，第一个函数会计算总收入。第二次计算负费用，但现在我不知道如何从总费用中减去费用？

基本上 - 我有回答 A 的功能（总）。我有答案 B（费用）的功能。但是如何从 A 中减去 B？

任何帮助都会很棒！

<script language="javascript" type="text/javascript">
function runGross(grossForm) {

var field1 = Number(grossForm.box1.value);

var field2 = Number(grossForm.box2.value);

var field3 = Number(grossForm.box3.value);

grossForm.total.value = '$' + field1*field2*field3;

}

function runTotal(totalForm) {

var field4 = Number(totalForm.box4.value);

var field5 = Number(totalForm.box5.value);

var field6 = Number(totalForm.box6.value);

var field7 = Number(totalForm.box7.value);

var field8 = Number(totalForm.box8.value);

var field9 = Number(totalForm.box9.value);

var field10 = Number(totalForm.box10.value);

var field11 = Number(totalForm.box11.value);

totalForm.total.value = field4-field5-field6-field7-field8-field9-field10-field11;

}

</script>


<h1>How Much Can You Make as Counselor in Private Practice?</h1>
<h2><span style="color: #339966;">Adding the Total Gross Revenue</span></h2>
Use an average of cash clients and various payers. Remember, that insurance pays a little more for first appointments, and couples counseling / family therapy.

<form><span style="color: #339966;"><strong>Revenue Per Session</strong></span>: <input type="text" name="box1" size="10" maxlength="20" placeholder="Avg 50-150" />
<br/><br/>
30-35 sessions a week is traditionally fulltime. Some clinicians work more, some work less.
<br/>
<span style="color: #339966;"><strong>Sessions Per Week:</strong></span><input type="text" name="box2" size="10" maxlength="20" placeholder="Avg. 30-35"/>
<br/>
<br/>
Recommended: 48 weeks per year. That allows for 4 weeks off per year.
<br/>
<span style="color: #339966;"><strong>Weeks Per Year</strong>:</span> <input type="text" name="box3" size="10" maxlength="20" placeholder="Avg. 48-50" />
<br/>
<br/>
<strong><span style="color: #339966;">Your Total Gross Revenue:</span> </strong>

<input onclick="runGross(this.form)" type="button" value="Calculate My Gross Revenue" />
<input type="text" name="total" size="10" maxlength="20" />

</form>


<h2><span style="color: #ff0000;">Subtracting the Expenses</span></h2>
Remember to include heat, electric, water, and Internet (if applicable).

<form><span style="color: #ff0000;"><strong>Rent & Utilities (per year):</strong></span> <input type="text" name="box4" size="10" maxlength="20" />
<br/>
<br/>
Some providers in private practice spend around 7% of revenue. Others spend 0%.
<br/>
<span style="color: #ff0000;"><strong>Marketing:</strong></span><input type="text" name="box5" size="10" maxlength="20" />
<br/>
<br/>
Will you hire a billing company (calculate 5% of revenue)? Accept credit cards (calculate 2% of revenue)?
<br/>
<span style="color: #ff0000;"><strong>Medical Billing</strong>:</span> <input type="text" name="box6" size="10" maxlength="20" />
<br/>
<br/>
These can be under $300 a year if you’re frugal, or thousands if you plan to attend conferences. 
<br/>
<span style="color: #ff0000;"><strong>CEUs and Association Fees:</strong></span> <input type="text" name="box7" size="10" maxlength="20" />
<br/>
<br/>
Professional Liability insurance is approx $150-$350 a year.
<br/>
<span style="color: #ff0000;"><strong>Insurance:</strong></span> <input type="text" name="box8" size="10" maxlength="20" />
<br/>
<br/>
For a solo-practice, can be around $2500 a year.
<br/>
<span style="color: #ff0000;"><strong>Office Expenses:</strong></span> <input type="text" name="box9" size="10" maxlength="20" />
<br/>
<br/>

Approx $500 a year for Legal Expenses.
<br/>
<span style="color: #ff0000;"><strong>Accounting and Legal:</strong></span> <input type="text" name="box10" size="10" maxlength="20" />
<br/>
<br/>
Estimate another $1500 for the unexpected!
<br/>
<span style="color: #ff0000;"><strong>Misc. Expenses:</strong></span> <input type="text" name="box11" size="11" maxlength="20" />
<br/>
<br/>

<strong><span style="color: #339966;">Your Total Pre-Tax (Pre-Tax):</span> </strong>

<strong></strong><input onclick="runTotal(this.form)" type="button" value="Calculate My Total" />
<input type="text" name="total" size="20" maxlength="20" />

</form>
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1 回答 1

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我认为如果你的函数有返回值，它会起作用，如下所示：

var runGross = function (grossForm)
{
    //contents here

    return grossForm.total.value;
}

和

var runTotal = function (totalForm)
{
    //contents here

    return totalForm.total.value;
}

那么如果你想要另一个函数来找到差异：

var findProfit = function (runGross, runTotal)
{
    return runGross - runTotal;
}
于 2013-03-05T01:04:50.980 回答