OnFocus 不是工作 JavaScript HTML;不显示对焦时计算和按钮单击时
onfocus is not working javascript html; does not display calculate onfocus and on button click
这是我第一次使用堆栈溢出，我已经在这里漂泊了很长时间，终于有勇气加入并获得一些帮助/批评，以提高我的编码技能。
我目前被困在这件事上两天，我似乎无法弄清楚发生了什么。
此代码设置的工作方式是验证模糊文本字段（确实如此）。
在第一个和第二个字段集上，要求用户输入：
- 总收入
- 复选框 男/母
如果是男性income tax = gross_income*0.19其他女性income tax = gross_income*0.17。
将其相加到您在 2 个依赖项后获得的每个依赖项的百分比。加上CPP和EI将给我总扣除额。（在制品）
出现此问题如下：
该值将加起来为 cpp 和 ei 并显示在警报中，但它将显示undefined在总依赖项中。
在我正在计算总宽限度的第二个字段集中。
它将在警报中显示为不是数字，并将值作为文本框undefined。
总数假设在单击按钮后显示，但它只是闪烁总净收入，上面写着，undefined。
我将不胜感激。
谢谢。
编辑：如果有人能建议我实施和验证复选框的更好方法，我将不胜感激。
/*convert gender dependencies income tax: based on the gender
-> Total Deductions
if gender is male: 19% income tax will be deducted, if female: 17% will be deducted.
CPP: is 6% of the total gross_income and EI: is 9% of the total gross_income Union Dues: 2% of the total gross_income
-> Total Grace
if number of dependencies are 3, 2% of total gross_income will be added, if 4, 4% of total gross_income will be added.
Bonus: $150, and conveyance_allowance: $ 100.
*/
var gross_income,
//gender = {genM: gross_income*0.19 , genF: gross_income*0.17},
num_depend;
//income_tax;
var bonus, con_all;
var CPP, EI;
var tot_deduct, tot_grace, net_income;
/*validating gross income*/
function validate_gross(GROSS_INCOME)
{
this.GROSS_INCOME = gross_income;
GROSS_INCOME = document.getElementById("GrossInput").value;
//gross_income = parseFloat(gross_income);
if(isNaN(GROSS_INCOME))
{
alert("ERROR: PLEASE ENTER A VALUE IN NUMBERS");
document.getElementById("GrossInput").value = "";
document.getElementById("GrossInput").focus();
}
else if(GROSS_INCOME == null || GROSS_INCOME == "")
{
alert("ERROR: GROSS INCOME FIELD IS EMPTY");
document.getElementById("GrossInput").value = "";
document.getElementById("GrossInput").focus();
}
else if(GROSS_INCOME <= "0")
{
alert("ERROR: GROSS INCOME MUST BE GREATER THAN ZERO");
document.getElementById("GrossInput").value = "";
document.getElementById("GrossInput").focus();
}
else
{
// alert("VALIDATED");
return GROSS_INCOME = parseFloat(GROSS_INCOME);
}
}
/*function validate gender()
{
//TO DO: enter your code here; Figure out how to validate the gender.
}*/
/*validate number of dependencies*/
function validate_depend(NUM_DEPEND)
{
this.NUM_DEPEND = num_depend;
NUM_DEPEND = document.getElementById("Depend").value;
//gross_income = parseFloat(gross_income);
if(isNaN(NUM_DEPEND) || NUM_DEPEND < "0")
{
alert("ERROR: INVALID ENTRY");
document.getElementById("Depend").value = "";
document.getElementById("Depend").focus();
}
else if(NUM_DEPEND == null || NUM_DEPEND== "")
{
alert("ERROR: DEPENDANCE FIELD IS EMPTY");
document.getElementById("Depend").value = "";
document.getElementById("Depend").focus();
}
else if(NUM_DEPEND == "3")
{
// alert("VALIDATED: gross_income * 0.02");
return NUM_DEPEND = gross_income*0.02; parseFloat(NUM_DEPEND);
}
else if(NUM_DEPEND == "4")
{
// alert("VALIDATED: gross_income * 0.04");
return NUM_DEPEND = gross_income*0.04; parseFloat(NUM_DEPEND);
}
else
{
// alert("VALIDATED");
return NUM_DEPEND = parseFloat(NUM_DEPEND);
}
}
/*-----------------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
/*validate grace*/
function validate_bonus(BONUS)
{
this.BONUS = bonus;
BONUS = document.getElementById("Bonus").value;
BONUS = parseFloat(BONUS);
//validate bonus
if(isNaN(BONUS))
{
alert("ERROR: NUMBER VALUES ONLY");
document.getElementById("Bonus").value = "";
document.getElementById("Bonus").focus();
}
else if(BONUS == null || BONUS == "")
{
alert("ERROR: BONUS FIELD IS EMPTY");
document.getElementById("Bonus").value = "";
document.getElementById("Bonus").focus();
}
else if(BONUS < 0)
{
alert("ERROR: BONUS CAN BE EITHER ZERO OR GREATER THAN ZERO");
document.getElementById("Bonus").value = "";
document.getElementById("Bonus").focus();
}
else
{
// alert("VALIDATED");
return BONUS;parseFloat(BONUS);
}
}
//validate con_all
function validate_ca(CON_ALL)
{
this.CON_ALL = con_all;
CON_ALL = document.getElementById("CA").value;
CON_ALL = parseFloat(CON_ALL);
if(isNaN(CON_ALL))
{
alert("ERROR: NUMBER VALUES ONLY");
document.getElementById("CA").value = "";
document.getElementById("CA").focus();
}
else if(CON_ALL == null || CON_ALL == "")
{
alert("ERROR: CONVEYANCE ALLOWANCE FIELD IS EMPTY");
document.getElementById("CA").value = "";
document.getElementById("CA").focus();
}
else if(CON_ALL < 0)
{
alert("ERROR: CONVEYANCE ALLOWANCE CAN BE EITHER ZERO OR GREATER THAN ZERO");
document.getElementById("CA").value = "";
document.getElementById("CA").focus();
}
else
{
// alert("VALIDATED");
return CON_ALL;parseFloat(CON_ALL);
}
}
function tot_grace(TOT_GRACE)
{
this.TOT_GRACE = tot_grace;
TOT_GRACE = validate_depend(num_depend) + validate_bonus(bonus) + validate_ca(con_all);
TOT_GRACE = parseFloat(TOT_GRACE);
return alert(TOT_GRACE);
}
function display_grace()
{
document.getElementById("totGrace").value = tot_grace();
}
/*-----------------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
/*deductions*/
function validate_CPP(CPP)
{
this.CPP = CPP;
CPP= document.getElementById("CPP").value;
CPP = parseFloat(CPP);
//validate deductions
if(isNaN(CPP))
{
alert("ERROR: NUMBER VALUES ONLY");
document.getElementById("CPP").value = "";
document.getElementById("CPP").focus();
}
else if(CPP == null || CPP == "")
{
alert("ERROR: CPP FIELD IS EMPTY");
document.getElementById("CPP").value = "";
document.getElementById("CPP").focus();
}
else if(CPP < 0)
{
alert("ERROR: CPP CAN BE EITHER ZERO OR GREATER THAN ZERO");
document.getElementById("CPP").value = "";
document.getElementById("CPP").focus();
}
else
{
// alert("VALIDATED");
return CPP;parseFloat(CPP);
}
}
//validate con_all
function validate_EI(EI)
{
this.EI = EI;
EI = document.getElementById("EI").value;
EI = parseFloat(EI);
if(isNaN(EI))
{
alert("ERROR: NUMBER VALUES ONLY");
document.getElementById("EI").value = "";
document.getElementById("EI").focus();
}
else if(EI == null || EI == "")
{
alert("ERROR: CONVEYANCE ALLOWANCE FIELD IS EMPTY");
document.getElementById("EI").value = "";
document.getElementById("EI").focus();
}
else if(EI < 0)
{
alert("ERROR: CONVEYANCE ALLOWANCE CAN BE EITHER ZERO OR GREATER THAN ZERO");
document.getElementById("EI").value = "";
document.getElementById("EI").focus();
}
else
{
// alert("VALIDATED");
return EI;parseFloat(EI);
}
}
function tot_deduct(TOT_DEDUCT)
{
this.TOT_DEDUCT = tot_deduct;
TOT_DEDUCT = validate_CPP(CPP) + validate_EI(EI);//add income tax as well.
TOT_DEDUCT = parseFloat(TOT_DEDUCT);
return alert(TOT_DEDUCT);
}
function display_deduct()
{
document.getElementById("totDeduct").value = tot_deduct();
}
/*-----------------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
function display_net()
{
document.getElementById("totNet").value = net_income;
}
/*tot_deduct = income_tax + deduct.cpp + deduct.ei;
net_income = gross_income - tot_deduct + tot_grace;*/
用于此目的的 HTML 如下所示：
<html>
<head><title>Calculating Net Income</title></head>
<link href = "../css/net_income.css" type = "type/css" rel = "stylesheet"/>
<body>
<!--Since it is only one HTML document:
It has one flow, so HTML before Java script-->
<div id ="divstyle">
<form><h1>NET INCOME</h1>
<!--Fieldset1-->
<fieldset>
<legend>GROSS INCOME</legend>
<label><b>Gross Income:</b><input type = "text" id = "GrossInput" onblur = "validate_gross(GrossInput)"></label>
<label><b>Gender: Male:</b><input type = "checkbox" id = "Gender_Male"><b>Female:</b><input type = "checkbox" id = "Gender_Female"></label>
<label><b>Dependencies:</b><input type = "text" id = "Depend" onblur = "validate_depend(Depend)"></label>
</fieldset>
<fieldset>
<legend>GRACE</legend>
<label><b>Grace:Bonus:</b><input type = "text" id = "Bonus" onblur = "validate_bonus(Bonus)"><b>CA:</b><input type = "text" id = "CA" onblur = "validate_ca(CA)"></label><br/>
<label><b>total Grace:</b><input type = "text" id = "totGrace" onfocus = "display_grace()"></label>
</fieldset>
<fieldset>
<legend>DEDUCTIONS</legend>
<label><b>Deductions:CPP:</b><input type = "text" id = "CPP" onblur = "validate_CPP(CPP)"><b>EI:</b><input type = "text" id = "EI" onblur = "validate_EI(EI)"></label><br/>
<label><b>Total Deductions:</b><input type = "text" id = "totDeduct" onfocus = "display_deduct()"></label>
</fieldset>
<br/>
<button id = "Calc_btn" onclick = "display_net(Calc_btn)">CALCULATE</button><br/><br/>
<label><b>Net Income:</b><input type = "text" id = "totNet" ></label><br/>
</form>
</div>
</body>
<!--<script type = "text/javascript" src ="../js/net_income.js"></script>-->
<script type = "text/javascript" src ="../js/OOP_Improved_Assignment7.js"></script>
</html>
将 javascript 中的 display_net() 函数更改为
/* HERE GOES YOUR OTHER CODES TO VALIDATE THE INPUT FIELD etc...*/
function display_net() {
var income_tax;
var gross_income = parseInt(document.getElementById("GrossInput").value);
var dependencies = parseInt(document.getElementById("Depend").value);
if (dependencies > 2) {
var depend = dependencies-2;
var perc_per_depend = gross_income*0.02;
var total_perc = depend*perc_per_depend;
}
var bonus = 150; //As in your comment $150
var ca = 100 //As in your comment $100
if (document.getElementById('g1').checked) {
income_tax = gross_income*0.19;
}
else if (document.getElementById('g2').checked) {
income_tax = gross_income*0.17;
}
var cpp = gross_income*0.06;
var ei = gross_income*0.09;
document.getElementById("Bonus").value = bonus;
document.getElementById("CA").value = ca;
var tot_grace = total_perc + bonus + ca;
document.getElementById("totGrace").value = tot_grace;
document.getElementById("CPP").value = cpp;
document.getElementById("EI").value = ei;
var tot_deduct = cpp + ei;
document.getElementById("totDeduct").value = tot_deduct;
document.getElementById("totNet").value = (gross_income + tot_grace) - tot_deduct;
}
如果我理解你的问题，这就是你需要的
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