177 lines
4.5 KiB
Markdown
177 lines
4.5 KiB
Markdown
---
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id: bad87fee1348bd9acde08812
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title: 使圖片自適應移動端
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challengeType: 0
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forumTopicId: 18232
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dashedName: make-images-mobile-responsive
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---
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# --description--
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首先,在已有的圖片下面添加一張新的圖片。 將新圖片的 `src` 屬性設置爲 `https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg`。
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如果圖片的大小恰恰和我們手機屏幕尺寸大小一樣自然是最好的。
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幸運的是,現在通過 Bootstrap,我們僅僅只需要爲 image 標籤上設置 class 屬性爲 `img-responsive` , 就可以讓它完美地適應你的頁面的寬度了。
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# --hints--
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該頁面共有兩張圖片。
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```js
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assert($('img').length === 2);
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```
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新的圖片應該在舊的圖片下面並且有值包含 `img-responsive` 的 class 屬性。
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```js
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assert($('img:eq(1)').hasClass('img-responsive'));
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```
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新圖片的 class 不應該包含 `smaller-image`。
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```js
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assert(!$('img:eq(1)').hasClass('smaller-image'));
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```
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新圖片應該有一個值爲 `https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg` 的 `src` 屬性。
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```js
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assert($('img:eq(1)').attr('src') === 'https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg');
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```
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確保新的 `img` 元素有一個閉合的尖括號。
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```js
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assert(
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code.match(/<img/g) &&
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code.match(/<img[^<]*>/g).length === 2 &&
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code.match(/<img/g).length === 2
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);
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```
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# --seed--
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## --seed-contents--
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```html
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<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
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<style>
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.red-text {
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color: red;
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}
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h2 {
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font-family: Lobster, Monospace;
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}
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p {
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font-size: 16px;
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font-family: Monospace;
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}
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.thick-green-border {
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border-color: green;
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border-width: 10px;
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border-style: solid;
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border-radius: 50%;
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}
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.smaller-image {
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width: 100px;
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}
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</style>
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<div class="container-fluid">
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<h2 class="red-text">CatPhotoApp</h2>
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<p>Click here for <a href="#">cat photos</a>.</p>
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<a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
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<p>Things cats love:</p>
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<ul>
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<li>cat nip</li>
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<li>laser pointers</li>
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<li>lasagna</li>
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</ul>
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<p>Top 3 things cats hate:</p>
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<ol>
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<li>flea treatment</li>
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<li>thunder</li>
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<li>other cats</li>
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</ol>
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<form action="https://freecatphotoapp.com/submit-cat-photo">
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<label><input type="radio" name="indoor-outdoor"> Indoor</label>
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<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
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<label><input type="checkbox" name="personality"> Loving</label>
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<label><input type="checkbox" name="personality"> Lazy</label>
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<label><input type="checkbox" name="personality"> Crazy</label>
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<input type="text" placeholder="cat photo URL" required>
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<button type="submit">Submit</button>
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</form>
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</div>
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```
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# --solutions--
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```html
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<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
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<style>
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.red-text {
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color: red;
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}
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h2 {
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font-family: Lobster, Monospace;
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}
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p {
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font-size: 16px;
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font-family: Monospace;
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}
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.thick-green-border {
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border-color: green;
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border-width: 10px;
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border-style: solid;
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border-radius: 50%;
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}
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.smaller-image {
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width: 100px;
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}
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</style>
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<div class="container-fluid">
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<h2 class="red-text">CatPhotoApp</h2>
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<p>Click here for <a href="#">cat photos</a>.</p>
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<a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
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<img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive">
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<p>Things cats love:</p>
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<ul>
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<li>cat nip</li>
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<li>laser pointers</li>
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<li>lasagna</li>
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</ul>
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<p>Top 3 things cats hate:</p>
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<ol>
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<li>flea treatment</li>
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<li>thunder</li>
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<li>other cats</li>
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</ol>
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<form action="https://freecatphotoapp.com/submit-cat-photo">
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<label><input type="radio" name="indoor-outdoor"> Indoor</label>
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<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
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<label><input type="checkbox" name="personality"> Loving</label>
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<label><input type="checkbox" name="personality"> Lazy</label>
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<label><input type="checkbox" name="personality"> Crazy</label>
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<input type="text" placeholder="cat photo URL" required>
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<button type="submit">Submit</button>
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</form>
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</div>
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```
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