我尝试构建这个 javascript 计算器,但有一个问题。当我输入值时,它运行良好。但问题是当我刷新页面时,她没有刷新;她只保存输入的第一个值。为什么?
var
displayResultBtn = document.querySelector('#calc-btn'),
backToInputBtn = document.querySelector('#back-input');
var
inputPage = document.querySelector('#data-inputs'),
outputPage = document.querySelector('#data-outputs');
/* ========== Go to Result ========== */
displayResultBtn.addEventListener('click', displayResult);
function displayResult(){
var
coutJour = parseFloat(document.querySelector('#cj-input').value),
nbrJour = parseInt(document.querySelector('#nj-input').value),
prime;
// calcul Base Salary
slrBase = coutJour * nbrJour;
if(nbrJour>=25){
prime = 200;
}
else if(nbrJour>=20){
prime = 150;
}
else if(nbrJour>=15){
prime = 100;
}
else if(nbrJour<15){
prime = 50;
}
//calcul Net Salary
var slrNet = slrBase + prime;
//display results in his places
document.querySelector('#slrBase-result').innerHTML = slrBase + " $";
document.querySelector('#prime-result').innerHTML = prime + " $";
document.querySelector('#slrNet-result').innerHTML = slrNet + " $",
document.querySelector('#slrNet-result').style.color = "red";
// display the result Page
inputPage.style.display = "none";
outputPage.style.display = "flex";
}
/* ========== Back to inputs ========== */
backToInputBtn.addEventListener('click', displayInputs);
function displayInputs(){
outputPage.style.display = "none";
inputPage.style.display = "initial";
}
*{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: sans-serif;
}
body{
width: 100%;
height: 100vh;
display: grid;
grid-template-rows: 10% 85% 5%;
}
/* ========== Header ========== */
header{
width: 100%;
display: flex;
justify-content: center;
align-items: center;
background-color: #a52a2a;
}
header h1{
font-size: 2.5rem;
font-weight: 600;
text-transform: uppercase;
letter-spacing: .05rem;
color: #fff;
}
main{
width: 100%;
height: 100%;
display: flex;
justify-content: center;
align-items: center;
}
/* ========== Input ========== */
#data-inputs{
display: initial;
width: 300px;
height: auto;
padding: 25px;
}
.inputs{
margin-bottom: 25px;
}
input{
width: 100%;
margin-bottom: 15px;
padding: 5px;
outline: none;
border: none;
border-bottom: 1px solid;
font-size: 1rem;
text-align: center;
background-color: transparent;
}
input::placeholder{
font-size: 1rem;
text-align: center;
}
input:focus{
border-bottom: 2px solid #a52a2a;
}
.btns{
width: 100%;
display: flex;
justify-content: space-between;
}
button{
padding: 10px;
outline: none;
font-size: 1rem;
font-weight: 600;
text-transform: uppercase;
cursor: pointer;
transition: .3s;
}
button:hover{
transform: translateY(-2px);
box-shadow: 0 2px 4px #333333;
}
#calc-btn, .final__btn{
width: 50%;
border: none;
color: #fff;
background-color: #a52a2a;
}
#reset-btn{
width: 45%;
border: 1px solid #a52a2a;
color: #a52a2a;
background-color: transparent;
}
/* ========== Output ========== */
#data-outputs{
width: 400px;
height: auto;
display: none;
flex-direction: column;
row-gap: 2rem;
padding: 25px;
}
.outputs{
background-color: #a52a2a;
}
.result__container{
display: flex;
justify-content: space-between;
margin: 2px;
padding: 10px;
font-size: 1.2rem;
font-weight: 500;
background-color: #fff;
}
.btn{
width: 100%;
display: flex;
justify-content: center;
}
/* ========== Footer ========== */
footer{
display: flex;
justify-content: center;
align-items: center;
color: #fff;
background-color: #a52a2a;
}
<header class="header">
<h1>Net Salary</h1>
</header>
<div class="container">
<main class="main">
<div class="data__inputs" id="data-inputs">
<div class="inputs">
<input type="number" placeholder="Cout Journalier" id="cj-input">
<input type="number" placeholder="Nombre jour" id="nj-input">
</div>
<div class="btns">
<button type="reset" id="reset-btn">reset</button>
<button id="calc-btn">calcul</button>
</div>
</div>
<div class="data__outputs" id="data-outputs">
<div class="outputs">
<div class="result__container">
<span class="output__title">Base Salary :</span>
<span id="slrBase-result">0 $</span>
</div>
<div class="result__container">
<span class="output__title">Prime :</span>
<span id="prime-result">0 $</span>
</div>
<div class="result__container">
<span class="output__title">Net Salary :</span>
<span id="slrNet-result">0 $</span>
</div>
</div>
<div class="btn">
<button type="reset" class="final__btn" id="back-input">OK</button>
</div>
</div>
</main>
</div>
<footer class="footer">
<p>Copyright © 2020-2021 Aatmane. All rights reserved</p>
</footer>
答案 0 :(得分:1)
您使用的是简单输入而不是表单,一种简单的方法是将值设置为空
function displayInputs() {
outputPage.style.display = "none";
inputPage.style.display = "initial";
let coutJour = document.querySelector("#cj-input"),
nbrJour = document.querySelector("#nj-input");
coutJour.value = "";
nbrJour.value = "";
}
或使用表单代替并使用重置按钮或表单的 .reset() 函数
答案 1 :(得分:0)
一个 button type="reset"
仅在它位于 form
元素内时才有效。而且,如果你有一个 form
元素,那么没有 button
的 type
元素会自动变成一个 type="submit"
,所以如果你不想它提交,它应该成为type="button"
。
在下面的代码中,请注意 form
元素在您的 header
之后开始并在您的 footer
之前关闭。
var
displayResultBtn = document.querySelector('#calc-btn'),
backToInputBtn = document.querySelector('#back-input');
var
inputPage = document.querySelector('#data-inputs'),
outputPage = document.querySelector('#data-outputs');
/* ========== Go to Result ========== */
displayResultBtn.addEventListener('click', displayResult);
function displayResult(){
var
coutJour = parseFloat(document.querySelector('#cj-input').value),
nbrJour = parseInt(document.querySelector('#nj-input').value),
prime;
// calcul Base Salary
slrBase = coutJour * nbrJour;
if(nbrJour>=25){
prime = 200;
}
else if(nbrJour>=20){
prime = 150;
}
else if(nbrJour>=15){
prime = 100;
}
else if(nbrJour<15){
prime = 50;
}
//calcul Net Salary
var slrNet = slrBase + prime;
//display results in his places
document.querySelector('#slrBase-result').innerHTML = slrBase + " $";
document.querySelector('#prime-result').innerHTML = prime + " $";
document.querySelector('#slrNet-result').innerHTML = slrNet + " $",
document.querySelector('#slrNet-result').style.color = "red";
// display the result Page
inputPage.style.display = "none";
outputPage.style.display = "flex";
}
/* ========== Back to inputs ========== */
backToInputBtn.addEventListener('click', displayInputs);
function displayInputs(){
outputPage.style.display = "none";
inputPage.style.display = "initial";
}
*{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: sans-serif;
}
body{
width: 100%;
height: 100vh;
display: grid;
grid-template-rows: 10% 85% 5%;
}
/* ========== Header ========== */
header{
width: 100%;
display: flex;
justify-content: center;
align-items: center;
background-color: #a52a2a;
}
header h1{
font-size: 2.5rem;
font-weight: 600;
text-transform: uppercase;
letter-spacing: .05rem;
color: #fff;
}
main{
width: 100%;
height: 100%;
display: flex;
justify-content: center;
align-items: center;
}
/* ========== Input ========== */
#data-inputs{
display: initial;
width: 300px;
height: auto;
padding: 25px;
}
.inputs{
margin-bottom: 25px;
}
input{
width: 100%;
margin-bottom: 15px;
padding: 5px;
outline: none;
border: none;
border-bottom: 1px solid;
font-size: 1rem;
text-align: center;
background-color: transparent;
}
input::placeholder{
font-size: 1rem;
text-align: center;
}
input:focus{
border-bottom: 2px solid #a52a2a;
}
.btns{
width: 100%;
display: flex;
justify-content: space-between;
}
button{
padding: 10px;
outline: none;
font-size: 1rem;
font-weight: 600;
text-transform: uppercase;
cursor: pointer;
transition: .3s;
}
button:hover{
transform: translateY(-2px);
box-shadow: 0 2px 4px #333333;
}
#calc-btn, .final__btn{
width: 50%;
border: none;
color: #fff;
background-color: #a52a2a;
}
#reset-btn{
width: 45%;
border: 1px solid #a52a2a;
color: #a52a2a;
background-color: transparent;
}
/* ========== Output ========== */
#data-outputs{
width: 400px;
height: auto;
display: none;
flex-direction: column;
row-gap: 2rem;
padding: 25px;
}
.outputs{
background-color: #a52a2a;
}
.result__container{
display: flex;
justify-content: space-between;
margin: 2px;
padding: 10px;
font-size: 1.2rem;
font-weight: 500;
background-color: #fff;
}
.btn{
width: 100%;
display: flex;
justify-content: center;
}
/* ========== Footer ========== */
footer{
display: flex;
justify-content: center;
align-items: center;
color: #fff;
background-color: #a52a2a;
}
<header class="header">
<h1>Net Salary</h1>
</header>
<form>
<div class="container">
<main class="main">
<div class="data__inputs" id="data-inputs">
<div class="inputs">
<input type="number" placeholder="Cout Journalier" id="cj-input">
<input type="number" placeholder="Nombre jour" id="nj-input">
</div>
<div class="btns">
<button type="reset" id="reset-btn">reset</button>
<button type="button" id="calc-btn">calcul</button>
</div>
</div>
<div class="data__outputs" id="data-outputs">
<div class="outputs">
<div class="result__container">
<span class="output__title">Base Salary :</span>
<span id="slrBase-result">0 $</span>
</div>
<div class="result__container">
<span class="output__title">Prime :</span>
<span id="prime-result">0 $</span>
</div>
<div class="result__container">
<span class="output__title">Net Salary :</span>
<span id="slrNet-result">0 $</span>
</div>
</div>
<div class="btn">
<button type="reset" class="final__btn" id="back-input">OK</button>
</div>
</div>
</main>
</div>
</form>
<footer class="footer">
<p>Copyright © 2020-2021 Aatmane. All rights reserved</p>
</footer>