Lab - Dom Walk

Find the flags

by manu troiani

HTML

<div id="container">
     <h1>Find the flag elements.</h1>

    <p>There are three flags ("FLAG") in the content below. Find them and move their containing elements into the #bucket element.</p>
    
    <div class="main">
        <ul>
            <li>One</li>
            <li>FLAG #1</li>
            <li>Three</li>
        </ul>
        <div id="articles">
            <article class="new">
                 <h3>Article 1</h3>

                <p>This is <a href="#">some</a> body content</p>
                <p>This is some body content <a class="flag" href="#">FLAG #2</a>
                </p>
            </article>
            <article class="new">
                 <h3>Article 2</h3>

                <p>This is some body content</p>
            </article>
            <article>
                 <h3>Article 3</h3>

                <p>This is some body content</p>
            </article>
            <div class="footer">
                <div>
                    <div>
                        <div></div>
                        <div>
                            <div>FLAG #3</div>
                            <div></div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
    
    <div id="bucket">
         <h2>Dropped Flags:</h2>

        <!-- Where are my flags? -->
    </div>
</div>

CSS

body{
    font-size:.7em;
}

#bucket {
    position:absolute;
    top:5px;
    right:5px;
    border:2px solid #ccc;
    border-radius:2px;
    border-top:0;
    background-color:#ececec;
    width:20%;
    font-size:8px;
}
#bucket::before {
    content:"Bucket";
}

#bucket a,
#bucket div, 
#bucket li{
    display:block;
    color:red;
}

JavaScript

// Hunting flags in the Document
//
// Using only the built-in DOM methods
// Find the three elements that have the text "FLAG" inside them
// and move them (the element) into the div with id of #bucket
//
// Hint: You can use
//     document.getElementById
//     document.getElementsByTagName
//     document.getElementsByClassName
//     document.querySelector
//     document.querySlectorAll
// and all the parent, child and sibling selectors

// 1) get FLAG 1
var containerEl = document.getElementById("container");
console.log(containerEl);
console.log("Container fetched by id is", Object.getPrototypeOf(containerEl));


var liElement = document.getElementsByTagName("li");
console.log(liElement);
console.log("Container fetched by id is", Object.getPrototypeOf(liElement));

console.log( 'this is the first flag:' );
console.log ( liElement[1] );


// 2) get FLAG 2

var flag2 = document.getElementsByClassName("flag");
console.log( 'this is the second flag:' );
console.log ( flag2[0].innerText ) ;

// 3) get FLAG 3

var flag3 = document.getElementsByClassName("footer");
console.log( 'this is the third flag:' );
console.log ( flag3[0].innerText ) ;


// bonus: write a function to crawl the entire document and search for the "FLAG" text, and do the job for you.

function containsFlag(el, s){
    return  el.innerText == s ;
}

function findTheFlags(){
    var nodes = document.body.childNodes; // should give me the nodes
   
    for (var i=0; i < nodes.length; i++)
         var currentNode = nodes[i];
    	 if ( currentNode.firstChild != null ) 
             alert(currentNode.firstChild);
         
    
}

findTheFlags();
    //var nodes = document.body.childNodes;
    
    /*
    if ( myBody.documentElement ) {
        
        var currentElement = ;
        if (currentElement.textContent === 'FLAG' )
        currentElement 
    }
    
    return text;
	/*var myelement;
    document.innerText;*/