我有一个对象数组,其中一些对象具有带有值的“折扣”属性,而有些则根本没有该属性。当我遍历数组时,我想删除所有未定义的元素,因为这给了我一个错误。这是一些图片,向您展示我的问题:
var data = [
{
product: "Dusty Jumpsuit",
url: "",
image: "https://static1.squarespace.com/static/560c458be4b0af26f729d191/560c5de0e4b083d9c365515f/560d4d0de4b0edc898c43a14/1443712276073/kimem-dusty-jumpsuit_0358.jpg?format=2500w",
altDesc: "Blouse",
price: "$299.00",
discount: "$350.00"
},
{
product: "Jacky Trousers",
url: "",
image: "https://static1.squarespace.com/static/560c458be4b0af26f729d191/560c5de0e4b083d9c365515f/560d4d2fe4b0edc898c43b3c/1443712308758/kimem-jacky-bicolor-waist-trousers-navy-black_0374+%28Michelle+Liv%27s+conflicted+copy+2015-08-31%29.jpg?format=750w",
altDesc: "Pants",
price: "$228.00"
},
{
product: "Lisa Shirt",
url: "",
image: "https://static1.squarespace.com/static/560c458be4b0af26f729d191/560c5de0e4b083d9c365515f/560d4d67e4b094d8b81ba47a/1443712364244/kimem-lisa-oversized-shirt-navy_0363.jpg?format=750w",
altDesc: "Shirt",
price: "$253.00"
},
{
product: "Jane Skirt",
url: "",
image: "https://static1.squarespace.com/static/560c458be4b0af26f729d191/560c5de0e4b083d9c365515f/560d4d8fe4b0f1182e35da9a/1443712404868/kimem-long-pleated-skirt-black_0354.jpg?format=750w",
altDesc: "Shirt",
price: "$150.00",
discount: "$263.00"
},
];
function clothingView(item, index) {
return (`
<a href="${item.url}" class="shop-item">
<img src=${item.image} alt="${item.altDesc}" class="shop-item__img">
<div class="quickview">
<span class="quickview__icon">Quick View</span>
<span class="quickview__info">${item.product}
<br>
<span class="quickview__price">${item.price}<span class="quickview__price--discount">${item.discount}<span></span>
</span>
<span class="clothing-index">${index}</span>
</div>
</a>`)
};
var $productContainer = $('.products');
for (var i = 0; i < data.length; ++i) {
$productContainer.append( clothingView(data[i], i) )
}
* {
margin: 0;
padding: 0;
}
*,
*::before,
*::after {
box-sizing: inherit;
}
html {
box-sizing: border-box;
font-size: 40%;
-webkit-font-smoothing: subpixel-antialiased;
}
body {
font-family: "Karla", sans-serif;
font-weight: 400;
line-height: 1.6;
color: #222;
}
.products {
width: 100%;
display: flex;
flex-wrap: wrap;
}
.shop-item {
width: calc(100% / 5);
margin: 1rem;
position: relative;
display: flex;
justify-content: center;
}
.shop-item__img {
width: 100%;
height: 100%;
object-fit: cover;
}
.quickview {
width: 100%;
height: 100%;
position: absolute;
display: flex;
flex-direction: column;
justify-content: space-between;
align-content: center;
padding-bottom: 2rem;
color: #222;
letter-spacing: 0.15rem;
text-transform: uppercase;
opacity: 0;
transition: all ease-in-out 250ms;
}
.quickview:hover {
opacity: 1;
}
.quickview__icon {
font-size: 1rem;
background-color: rgba(204, 204, 204, 0.9);
padding: 0.7rem 1rem;
align-self: center;
}
.quickview__info {
font-size: 1.2rem;
align-self: center;
text-align: center;
}
.quickview__info--price {
font-size: 1rem;
color: rgba(61, 61, 61, 0.6);
}
.clothing-index {
display: none;
}
.quickview__price--discount {
margin-left: .5rem;
text-decoration: line-through;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="products all-items"></div>
我需要学习如何更好地解释自己,但是我希望这些图像和示例代码足以说明问题。我尝试将{discount:“”}添加到所有对象,但是不确定是否这是最好的方法。预先感谢。
答案 0 :(得分:2)
更改模板文字,以便如果没有discount
属性,则HTML字符串中不包含quickview__price--discount
span
:
function clothingView(item, index) {
return (`
<a href="${item.url}" class="shop-item">
<img src=${item.image} alt="${item.altDesc}" class="shop-item__img">
<div class="quickview">
<span class="quickview__icon">Quick View</span>
<span class="quickview__info">${item.product}
<br>
<span class="quickview__price">${item.price}
${ item.discount
? `<span class="quickview__price--discount">${item.discount}<span>`
: '' }
</span>
</span>
<span class="clothing-index">${index}</span>
</div>
</a>`)
};
var data = [
{
product: "Dusty Jumpsuit",
url: "",
image: "https://static1.squarespace.com/static/560c458be4b0af26f729d191/560c5de0e4b083d9c365515f/560d4d0de4b0edc898c43a14/1443712276073/kimem-dusty-jumpsuit_0358.jpg?format=2500w",
altDesc: "Blouse",
price: "$299.00",
discount: "$350.00"
},
{
product: "Jacky Trousers",
url: "",
image: "https://static1.squarespace.com/static/560c458be4b0af26f729d191/560c5de0e4b083d9c365515f/560d4d2fe4b0edc898c43b3c/1443712308758/kimem-jacky-bicolor-waist-trousers-navy-black_0374+%28Michelle+Liv%27s+conflicted+copy+2015-08-31%29.jpg?format=750w",
altDesc: "Pants",
price: "$228.00"
},
{
product: "Lisa Shirt",
url: "",
image: "https://static1.squarespace.com/static/560c458be4b0af26f729d191/560c5de0e4b083d9c365515f/560d4d67e4b094d8b81ba47a/1443712364244/kimem-lisa-oversized-shirt-navy_0363.jpg?format=750w",
altDesc: "Shirt",
price: "$253.00"
},
{
product: "Jane Skirt",
url: "",
image: "https://static1.squarespace.com/static/560c458be4b0af26f729d191/560c5de0e4b083d9c365515f/560d4d8fe4b0f1182e35da9a/1443712404868/kimem-long-pleated-skirt-black_0354.jpg?format=750w",
altDesc: "Shirt",
price: "$150.00",
discount: "$263.00"
},
];
function clothingView(item, index) {
return (`
<a href="${item.url}" class="shop-item">
<img src=${item.image} alt="${item.altDesc}" class="shop-item__img">
<div class="quickview">
<span class="quickview__icon">Quick View</span>
<span class="quickview__info">${item.product}
<br>
<span class="quickview__price">${item.price}
${ item.discount
? `<span class="quickview__price--discount">${item.discount}<span>`
: '' }
</span>
</span>
<span class="clothing-index">${index}</span>
</div>
</a>`)
};
var $productContainer = $('.products');
for (var i = 0; i < data.length; ++i) {
$productContainer.append( clothingView(data[i], i) )
}
* {
margin: 0;
padding: 0;
}
*,
*::before,
*::after {
box-sizing: inherit;
}
html {
box-sizing: border-box;
font-size: 40%;
-webkit-font-smoothing: subpixel-antialiased;
}
body {
font-family: "Karla", sans-serif;
font-weight: 400;
line-height: 1.6;
color: #222;
}
.products {
width: 100%;
display: flex;
flex-wrap: wrap;
}
.container {
padding: 4rem 5rem !important;
}
.shop-item {
width: calc(100% / 4);
margin: 1.5rem;
position: relative;
display: flex;
justify-content: center;
}
.shop-item__img {
width: 100%;
height: 100%;
object-fit: cover;
}
.quickview {
width: 100%;
height: 100%;
position: absolute;
display: flex;
flex-direction: column;
justify-content: space-between;
align-content: center;
padding-bottom: 2rem;
color: #222;
letter-spacing: 0.15rem;
text-transform: uppercase;
opacity: 0;
transition: all ease-in-out 250ms;
}
.quickview:hover {
opacity: 1;
}
.quickview__icon {
font-size: 1rem;
background-color: rgba(204, 204, 204, 0.9);
padding: 0.7rem 1rem;
align-self: center;
}
.quickview__info {
font-size: 1.2rem;
align-self: center;
text-align: center;
}
.quickview__info--price {
font-size: 1rem;
color: rgba(61, 61, 61, 0.6);
}
.popup {
height: 100vh;
width: 100%;
background-color: rgba(245, 239, 236, 0.8);
display: flex;
justify-content: center;
align-items: center;
position: fixed;
top: 0;
left: 0;
z-index: 100;
opacity: 0;
visibility: hidden;
transition: all ease-in-out 250ms;
}
.popup__img {
height: 95%;
}
.popup__close-icon {
position: absolute;
top: 1rem;
right: 2.5rem;
font-size: 3rem;
color: #d1d1d1;
cursor: pointer;
transition: all ease-in-out 250ms;
}
.popup__close-icon:hover {
color: rgba(61, 61, 61, 0.6);
}
.popup__close-icon-clothing {
position: absolute;
font-size: 3.6rem;
font-weight: lighter;
color: #222;
top: -1rem;
right: 1.5rem;
cursor: pointer;
}
.overlay {
position: fixed;
overflow-y: scroll;
overscroll-behavior: contain;
top: 0;
right: 0;
bottom: 0;
left: 0;
opacity: 0;
visibility: hidden;
background-color: rgba(240, 240, 240, 0.6);
}
.popup-item {
width: 75%;
height: 150vh;
background-color: #fff;
margin: 5rem auto;
display: flex;
justify-content: center;
}
.product-info {
padding: 5rem 3.5rem;
letter-spacing: 0.1rem;
color: #222;
}
.product-info--shop {
padding: 0 3.5rem;
}
.product__price {
font-size: 2.4rem;
margin: 3rem 0;
display: block;
color: rgba(29, 29, 29, 0.7);
}
.product-info__text {
font-size: 1.4rem;
margin-bottom: 3rem;
color: rgba(29, 29, 29, 0.7);
}
.detail-group {
color: #222;
margin-bottom: 4rem;
}
.detail-group__span {
font-size: 1.1rem;
text-transform: uppercase;
}
.detail-group__size {
width: 12.5rem;
font-size: 1.1rem;
letter-spacing: 0.1rem;
padding: 1.1rem 2rem;
margin-top: 0.5rem;
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
border-radius: 0;
border: 0;
outline: none;
background: url(../img/down-arrow.png) 85%/7% no-repeat #f8f8f8;
}
.detail-group__quantity {
width: 7.5rem;
padding: 1.1rem 1.6rem;
margin-top: 0.5rem;
outline: none;
border: 0;
background-color: #f8f8f8;
}
.clothing-item-flex {
height: 100%;
background-color: #fff;
display: flex;
}
.clothing-item-flex__img-wrapper {
min-width: 60%;
margin: 1.5rem;
overflow: hidden;
}
.clothing-item-flex__img-wrapper--no-margin {
margin: 0;
}
.clothing-item-flex__img {
width: 100%;
height: 100%;
object-fit: cover;
}
.btn {
display: inline-block;
font-size: 1.2rem;
font-weight: 700;
text-transform: uppercase;
letter-spacing: 0.2rem;
padding: 1.2rem 2.6rem;
border: 2px solid #fff;
color: #fff;
text-decoration: none;
outline: none;
transition: all 250ms ease-in-out;
}
.btn:hover {
color: #222;
background-color: #fff;
}
.btn--form {
color: #222;
border: 2px solid black;
font-weight: 400;
padding: 1.4rem 3.5rem;
cursor: pointer;
}
.btn--form:hover {
color: #fff;
background-color: #222;
}
.btn--form--shop {
padding: 2.3rem 3.4rem;
}
.btn-view {
display: block;
width: 10.5rem;
margin-top: 4rem;
font-size: 1.4rem;
letter-spacing: 0.1rem;
text-decoration: none;
color: rgba(61, 61, 61, 0.6);
border-bottom: 1px solid rgba(162, 162, 162, 0.7);
}
.popup-btn {
width: 3rem;
height: 3rem;
position: absolute;
top: 50%;
right: 9%;
cursor: pointer;
}
.popup-btn--prev {
transform: rotate(180deg);
left: 9%;
}
.popup-btn__icon {
height: 100%;
}
.clothing-index {
display: none;
}
.quickview__price--discount {
margin-left: .5rem;
text-decoration: line-through;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="products all-items"></div>