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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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About the <head>

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

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JavaScript

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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HTML 

              
                <div class="inbox">
    <label class="item">
        <input type="checkbox">
        <p>This is an inbox layout.</p>
    </label>
    <label class="item">
        <input type="checkbox">
        <p>Check one item</p>
    </label>
    <label class="item">
        <input type="checkbox">
        <p>Hold down your Shift key</p>
    </label>
    <label class="item">
        <input type="checkbox">
        <p>Check a lower item</p>
    </label>
    <label class="item">
        <input type="checkbox">
        <p>Everything inbetween should also be set to checked</p>
    </label>
    <label class="item">
        <input type="checkbox">
        <p>Try do it with out any libraries</p>
    </label>
    <label class="item">
        <input type="checkbox">
        <p>Just regular JavaScript</p>
    </label>
    <label class="item">
        <input type="checkbox">
        <p>Good Luck!</p>
    </label>
    <label class="item">
        <input type="checkbox">
        <p>Don't forget to tweet your result!</p>
    </label>
</div>
!

CSS 

              
                html {
    font-family: sans-serif;
    background: #ffc600;
}

.inbox {
    max-width: 400px;
    margin: 50px auto;
    background: white;
    border-radius: 5px;
    box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.1);
}

.item {
    display: flex;
    align-items: center;
    border-bottom: 1px solid #F1F1F1;
     user-select: none; 
        -ms-user-select: none; 
       -moz-user-select: none;
    -webkit-user-select: none;
}

.item:last-child {
    border-bottom: 0;
}

input:checked + p {
    background: #F9F9F9;
    text-decoration: line-through;
}

input[type="checkbox"] {
    margin: 20px;
}

p {
    margin: 0;
    padding: 20px;
    transition: background 0.2s;
    flex: 1;
    font-family: 'helvetica neue';
    font-size: 20px;
    font-weight: 200;
    border-left: 1px solid #D1E2FF;
}

.details {
    text-align: center;
    font-size: 15px;
}
!

JS 

              
                // 待解決
/**
 * 1. 按住 shift 會選取文字
**/

// STEP1: 選擇並監聽所以的 checkbox

const checkboxs = document.querySelectorAll('.inbox input[type="checkbox"]');
checkboxs.forEach(checkbox => checkbox.addEventListener("click", checkHandler));

let prevCheck;
function checkHandler(e) {

    let inBetween = false;

    if (e.shiftKey && e.target.checked) {
        checkboxs.forEach(checkbox => {
            if (checkbox.parentNode === e.target.parentNode.nextElementSibling || checkbox.parentNode === prevCheck) {
                /**
                 * 這裡是 inBetween 的開關，
                 * 第一次碰到會開啟，第二次碰到會關閉
                **/
                inBetween = !inBetween;
            }
            console.log("inBetween", checkbox, inBetween);    
            if (inBetween) {
                checkbox.checked = true;
            }
        });
    }
    if (this.checked) {
        prevCheck = e.target.parentNode; // 記住使用者上一次點擊的 checkbox
        console.log("---------------prevCheck", prevCheck);
    }
}
!
999px

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