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230919_jQuery 강의 본문

대덕인재개발원/대덕인재개발원_Front End

230919_jQuery 강의

Unlimited00 2023. 9. 19. 08:33

[jQueryTest23.html]

<!DOCTYPE html>
<html lang="ko">
    <head>
        <meta charset="UTF-8" />
        <meta name="author" content="LeeGJ" />
        <meta name="copyright" content="대덕인재개발원" />
        <meta name="description" content="제이쿼리23" />
        <meta name="keywords" content="대덕인재개발원, html, 제이쿼리23" />
        <meta name="viewport" content="initial-scale=1.0, width=device-width" />
        <title>제이쿼리23</title>
        <link href="css/style04.css" rel="stylesheet" />
        <script src="js/jquery-3.7.1.min.js"></script>
        <style>
            div {
                border: 3px dotted yellowgreen;
                margin: 20px;
                padding: 20px;
                font-size: 1.2rem;
                word-break: break-all;
            }
            input[type=button],
            button[type=button] {
                display: inline-block;
                padding: 5px 10px;
                text-align: center;
                font-size: 1.2em;
                font-weight: 700;
                background-color: blue;
                color: white;
                border: none;
                border-radius: 4px;
                margin-right: 10px;
                cursor: pointer;
            }
            .ancestors *,
            .ancestors {
                display: block;
                border: 2px solid lightgrey;
                color: lightgrey;
                padding: 5px;
                margin: 15px;
            }
        </style>
        <script>
            $(function(){
                
                // 버튼 클릭 했을 때 - 클릭한 버튼과 같은 영역의 span 태그를 찾아라
                var txt = "";
                $(".btn").click(function(){
                    var parents = $(this).parents(".ancestors");
                    var spanTxt = parents.find("span").text().trim();
//                    console.log(spanTxt);
                    alert(spanTxt);
                });
                
            });
        </script>
    </head>
    <body>

        <hr color="red" />
        
        <h1>
            jQuery 실습 23-1
        </h1>
        
        <div id="result1" class="ancestors">body (great-great-grandparent)
            <div style="width:500px;">div (great-grandparent)
                <ul>ul (grandparent)
                    <li>li (direct parent)
                        <span>1000</span>
                    </li>
                </ul>
            </div>
            <input class="btn" type="button" value="확인" />
        </div>
        
        <div id="result2" class="ancestors">body (great-great-grandparent)
            <div style="width:500px;">div (great-grandparent)
                <ul>ul (grandparent)
                    <li>li (direct parent)
                        <span>2000</span>
                    </li>
                </ul>
            </div>
            <input class="btn" type="button" value="확인" />
        </div>
        
        <div id="result3" class="ancestors">body (great-great-grandparent)
            <div style="width:500px;">div (great-grandparent)
                <ul>ul (grandparent)
                    <li>li (direct parent)
                        <span>3000</span>
                    </li>
                </ul>
            </div>
            <input class="btn" type="button" value="확인" />
        </div>
        
        <hr color="red" />
   
    </body>
</html>


[jQueryTest24.html]

<!DOCTYPE html>
<html lang="ko">
    <head>
        <meta charset="UTF-8" />
        <meta name="author" content="LeeGJ" />
        <meta name="copyright" content="대덕인재개발원" />
        <meta name="description" content="제이쿼리24" />
        <meta name="keywords" content="대덕인재개발원, html, 제이쿼리24" />
        <meta name="viewport" content="initial-scale=1.0, width=device-width" />
        <title>제이쿼리24</title>
        <link href="css/style05.css" rel="stylesheet" />
        <script src="js/jquery-3.7.1.min.js"></script>
        <style>
            div{
                border: 3px dotted yellowgreen;
                margin: 20px;
                padding: 20px;
                font-size: 1.2rem;
                word-break: break-all;
            }
            input[type=button],
            button[type=button] {
                display: inline-block;
                padding: 5px 10px;
                text-align: center;
                font-size: 1.2em;
                font-weight: 700;
                background-color: blue;
                color: white;
                border: none;
                border-radius: 4px;
                margin-right: 10px;
                cursor: pointer;
            }
            p {
                border: 1px solid blue;
                padding: 20px;
                margin: 20px;
            }
        </style>
        <script>
            $(function(){
                $("p").click(function(){
                    var parent = $(this).parent();
                    if(parent.is('div')){
                        // 글자색을 빨간색으로 변경
                        // p태그의 부모에 복사
//                        var pTag = $(this).clone().appendTo(parent).css({color : "red"});
                        var pTag = $(this).clone(true).appendTo(parent).css({color : "red"});
                    }else{
                        alert("작업 대상이 아닙니다.");
                    }
                });
            });
        </script>
    </head>
    <body>

        <hr color="red" />
        
        <h1>
            jQuery 실습 24-1
            <br />
            is메소드 실습
        </h1>
        
        <br />
        
        <div id="result1">
            <p>무궁화 꽃이 피었습니다.</p>
        </div>
        
        <p>은주는 예쁘다.</p>
        
        <div id="result2">
            <p>사랑은 늘 도망가</p>
        </div>
        
        <hr color="red" />
   
    </body>
</html>


[jQueryTest25.html]

<!DOCTYPE html>
<html lang="ko">
    <head>
        <meta charset="UTF-8" />
        <meta name="author" content="LeeGJ" />
        <meta name="copyright" content="대덕인재개발원" />
        <meta name="description" content="제이쿼리25" />
        <meta name="keywords" content="대덕인재개발원, html, 제이쿼리25" />
        <meta name="viewport" content="initial-scale=1.0, width=device-width" />
        <title>제이쿼리25</title>
        <link href="css/style05.css" rel="stylesheet" />
        <script src="js/jquery-3.7.1.min.js"></script>
        <style>
            div {
                border: 3px dotted yellowgreen;
                margin: 20px;
                padding: 20px;
                font-size: 1.2rem;
                word-break: break-all;
            }
            input[type=button],
            button[type=button] {
                display: inline-block;
                padding: 5px 10px;
                text-align: center;
                font-size: 1.2em;
                font-weight: 700;
                background-color: blue;
                color: white;
                border: none;
                border-radius: 4px;
                margin-right: 10px;
                cursor: pointer;
            }
            p {
                color: blue;
                font-size: 1.3rem;
                cursor: pointer;
            }
            p:hover {
                text-decoration: underline;
            }
            .result {
                background-color: yellow;
            }
            .fcolor {
                color: red;
            }
            .ffont {
                font-size: 2.0rem;
            }
            .bcolor {
                background-color: lightblue;
            }
        </style>
        <script>
            $(function(){
                $("p").mouseover(function(){
                    $(this).addClass("fcolor");
                });
                $("p").mouseout(function(){
                    $(this).removeClass("fcolor");
                });
                $("p").click(function(){
                    $(this).toggleClass("ffont");
                });
                $("div").click(function(){
                    if($(this).hasClass("result")){
                        $(this).toggleClass("bcolor");
                    }
                });
            });
        </script>
    </head>
    <body>

        <hr color="red" />
        
        <h1>
            jQuery 실습 25-1
            <br />
            addClass(), removeClass(), toggleClass(), hasClass()
        </h1>
        
        <br />
        
        <div class="result">
            <p>무궁화 꽃이 피었습니다.</p>
        </div>
        
        <div class="result">
            <p>무궁화 꽃이 피었습니다.</p>
        </div>
        
        <div class="result">
            <p>무궁화 꽃이 피었습니다.</p>
        </div>
        
        <hr color="red" />
   
    </body>
</html>


[jQueryTest26.html]

<!DOCTYPE html>
<html lang="ko">
    <head>
        <meta charset="UTF-8" />
        <meta name="author" content="LeeGJ" />
        <meta name="copyright" content="대덕인재개발원" />
        <meta name="description" content="제이쿼리26" />
        <meta name="keywords" content="대덕인재개발원, html, 제이쿼리26" />
        <meta name="viewport" content="initial-scale=1.0, width=device-width" />
        <title>제이쿼리26</title>
        <link href="css/style05.css" rel="stylesheet" />
        <script src="js/jquery-3.7.1.min.js"></script>
        <style>
            div {
                border: 3px dotted yellowgreen;
                margin: 20px;
                padding: 20px;
                font-size: 1.2rem;
                word-break: break-all;
            }
            input[type=button],
            button[type=button] {
                display: inline-block;
                padding: 5px 10px;
                text-align: center;
                font-size: 1.2em;
                font-weight: 700;
                background-color: blue;
                color: white;
                border: none;
                border-radius: 4px;
                margin-right: 10px;
                cursor: pointer;
            }
            img {
                display: block;
                width: 20%;
                height: 150px;
                float: left;
            }
            input[value=보이기] {
                display: none;
            }
        </style>
        <script>
            $(function(){
                
                $("#btn1").click(function(){
                    
//                    $("#result1 img").each(function(){
//                        var altTxt = $(this).attr("alt");
//                        $(this).attr("title", altTxt);
//                    });
                    
                    //attr(속성, fn)
                    $("#result1 img").attr('title', function(){
                        var src = $(this).attr("src");
//                        console.log(src);
                        var start = src.lastIndexOf('/') + 1;
                        var end = src.lastIndexOf('.');
                        var title = src.substring(start, end);
                        return title;
                    }); // attr
                    
                }); // btn1
                
                ///////////////////////////////
                
                $("#result2 img").dblclick(function(){
//                    $(this).css('display', 'none');
                    $(this).hide();
                    if($("#result2 img:visible").length < 1){
//                        $("input[value=보이기]").css('display', 'inline-block');
                        $("input[value=보이기]").show();
                    }
                }); // img - dblclick
                
                $("#btn2").click(function(){
                    $("#result2 img").show();
                    $("input[value=보이기]").hide();
                }); // btn2 - click
                
                $("#result2 img").mouseover(function(){
                    // 원래 이미지를 어딘가에 저장 - attr('src') - 가져오기
                    // 대체이미지를 보여준다 - src='대체이미지' - attr('src', '대체이미지')
                    var originImg = $(this).attr("src");
//                    console.log(originImg);
                    var dataTxt = $(this).attr("data");
//                    console.log(dataTxt);
                    $(this).attr("src", dataTxt);
                    $(this).attr("data", originImg);
                });
                
                $("#result2 img").mouseout(function(){
                    var altImg = $(this).attr("src");
//                    console.log(originImg);
                    var dataTxt = $(this).attr("data");
//                    console.log(dataTxt);
                    $(this).attr("src", dataTxt);
                    $(this).attr("data", altImg);
                });
                
            });
        </script>
    </head>
    <body>

        <hr color="red" />
        
        <h1>
            jQuery 실습 26-1
            <br />
            attr() 메소드
        </h1>
        
        <br />
        <input id="btn1" type="button" value="확인" />
        <br />
        
        <div id="result1" style="overflow: auto;">
            <img src="images/Chrysanthemum.jpg" alt="Chrysanthemum" />
            <img src="images/Desert.jpg" alt="Desert" />
            <img src="images/Hydrangeas.jpg" alt="Hydrangeas" />
            <img src="images/Jellyfish.jpg" alt="Jellyfish" />
            <img src="images/Koala.jpg" alt="Koala" />
        </div>
        
        <hr color="red" />
        
        <h1>
            jQuery 실습 26-2
            <br />
            attr() 메소드
            <br />
            이미지에 mouseover, mouseout 이벤트 설정
            <br />
            mouseover : 다른 이미지
            <br />
            mouseout : 원래 이미지
            <br />
            dblclick : 이미지 삭제
            <br />
            버튼 : 다시 이미지 보이기 - 처음 실행시 보이지 않는다 / 이미지가 다 사라졌을 때 버튼이 보인다.
        </h1>
        
        <br />
        <input id="btn2" type="button" value="보이기" />
        <br />
        
        <div id="result2" style="overflow: auto;">
            <img src="images/Chrysanthemum.jpg" alt="Chrysanthemum" data="images/%EB%8B%A8%ED%92%8D.jpg" />
            <img src="images/Desert.jpg" alt="Desert" data="images/%EB%8C%80%EB%82%98%EB%AC%B4%EC%88%B2.jpg" />
            <img src="images/Hydrangeas.jpg" alt="Hydrangeas" data="images/spongebob.png" />
            <img src="images/Jellyfish.jpg" alt="Jellyfish" data="images/shopping.jpg" />
            <img src="images/Koala.jpg" alt="Koala" data="images/Lighthouse.jpg" />
        </div>
        
        <hr color="red" />
   
    </body>
</html>


[jQueryTest27.html]

<!DOCTYPE html>
<html lang="ko">
    <head>
        <meta charset="UTF-8" />
        <meta name="author" content="LeeGJ" />
        <meta name="copyright" content="대덕인재개발원" />
        <meta name="description" content="제이쿼리27" />
        <meta name="keywords" content="대덕인재개발원, html, 제이쿼리27" />
        <meta name="viewport" content="initial-scale=1.0, width=device-width" />
        <title>제이쿼리27</title>
        <link href="css/style05.css" rel="stylesheet" />
        <script src="js/jquery-3.7.1.min.js"></script>
        <style>
            div {
                border: 3px dotted yellowgreen;
                margin: 20px;
                padding: 20px;
                font-size: 1.2rem;
                word-break: break-all;
            }
            input[type=button],
            button[type=button] {
                display: inline-block;
                padding: 5px 10px;
                text-align: center;
                font-size: 1.2em;
                font-weight: 700;
                background-color: blue;
                color: white;
                border: none;
                border-radius: 4px;
                margin-right: 10px;
                cursor: pointer;
            }
        </style>
        <script>
            $(function(){
                $("#btn1").click(function(){
                    // 각 요소들의 상태 값을 가져온다.
                    var check = $("#checkTest").prop("checked");
                    console.log(check); // true
                    var selected = $("#selTest option").eq(2).prop("selected");
                    console.log(selected); // true
                    var readonly = $("#txtTest").prop("readonly");
                    console.log(readonly); // true
                    var disabled = $("#runBtn").prop("disabled");
                    console.log(disabled); // true
                    
                    // 확인 버튼 클릭할 때마다 상태값을 반대로 변경
                    
                    $("#checkTest").prop("checked", !check);
                    $("#selTest option").eq(2).prop("selected", !selected);
                    $("#txtTest").prop("readonly", !readonly);
                    $("#runBtn").prop("disabled", !disabled);
                    
//                    if(check){
//                        $("#checkTest").prop("checked", false);
//                    }else {
//                        $("#checkTest").prop("checked", true);
//                    }
//                    if(selected){
//                        $("#selTest option").eq(2).prop("selected", false);
//                    }else {
//                        $("#selTest option").eq(2).prop("selected", true);
//                    }
//                    if(readonly){
//                        $("#txtTest").prop("readonly", false);
//                    }else {
//                        $("#txtTest").prop("readonly", true);
//                    }
//                    if(disabled){
//                        $("#runBtn").prop("disabled", false);
//                    }else {
//                        $("#runBtn").prop("disabled", true);
//                    }
                }); // btn1
                
                $("#check").click(function(){
                    // id=check인 요소의 checked 속성의 상태값을 가져온다.
                    var check = $(this).prop("checked");
//                    console.log(check);
                    // class=check 곳의 checked 속성의 상태값을 chk 변수 값으로 설정한다.
                    $(".check").prop("checked", check);
                }); // check
                
            });
        </script>
    </head>
    <body>

        <hr color="red" />
        
        <h1>
            jQuery 실습 27-1
            <br />
            prop() 속성상태 설정 및 상태 얻기
        </h1>
        
        <br />
        <input id="btn1" type="button" value="확인" />
        <br />
        
        <div id="result1">
            <form>
                체크박스(라디오버튼) : <input type="checkbox" id="checkTest" checked /><br><br>

                리스트박스(select객체) :
                <select id="selTest">
                    <option value="1">하나</option>
                    <option value="2">둘</option>
                    <option value="3" selected>셋</option>
                    <option value="4">넷</option>
                </select><br><br>

                text객체(readonly) : <input type="text" value="가나다" id="txtTest" readonly /><br><br>

                button객체(disabled) :
                <input type="button" value="실행" id="runBtn" onclick="alert('Hello~');" />
            </form>
        </div>
        
        <hr color="red" />
        
        <h1>
            jQuery 실습 27-2
            <br />
            prop() 속성상태 설정 및 상태 얻기
        </h1>
        
        <br />
        
        <style>
            #result2 input[type=checkbox] {
                margin-right: 10px;
            }
        </style>
        
        <div id="result2">
            <input id="check" type="checkbox" name="all" />전체선택
            
            <input type="checkbox" class="check" name="all" />1
            <input type="checkbox" class="check" name="all" />2
            <input type="checkbox" class="check" name="all" />3
            <input type="checkbox" class="check" name="all" />4
            <input type="checkbox" class="check" name="all" />5
        </div>
        
        <hr color="red" />
   
    </body>
</html>


 

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