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  • JS 20180415作业

    <!DOCTYPE html>
    <html>
        <head>
            <meta charset="UTF-8">
            <title></title>
            <style type="text/css">
                *{
                    margin: auto;
                    padding: 0px;
                    
                }
                #a1{
                    width: 1000px;
                    height: 200px;
                    border: 1px solid red;
                    background-color: white;
                    box-shadow: 8px 8px 8px gray;
                    margin-top: 10px;
                    overflow: hidden;
                }
                #a11{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    line-height: 50px;
                    
                }
                #a2{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    margin-top: 20px;
                }
                #a21{
                    width: 150px;
                    height: 30px;
                    margin-top: 20px;
                    margin-left: 50px;
                }
                #a4{
                    width: 1000px;
                    height: 250px;
                    border: 1px solid red;
                    background-color: white;
                    box-shadow: 8px 8px 8px gray;
                    margin-top: 10px;
                    overflow: hidden;
                }
                #a41{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    line-height: 50px;
                    
                }
                #a42{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    margin-top: 20px;
                }
                #a421{
                    width: 150px;
                    height: 30px;
                    margin-top: 20px;
                    margin-left: 50px;
                }
                #a43{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    line-height: 50px;
                    margin-left: 50px;
                }
                #a44{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    margin-top: 10px;
                }
                .a441{
                    width: 50px;
                    height: 50px;
                    border: 1px solid red;
                    background-color: white;
                    margin-left: 20px;
                    float: left;
                }
                #a5{
                    width: 1000px;
                    height: 600px;
                    border: 1px solid red;
                    background-color: white;
                    box-shadow: 8px 8px 8px gray;
                    margin-top: 10px;
                    overflow: hidden;
                }
                #a51{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    line-height: 50px;
                    margin-left: 20px;
                }
                #a52{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    margin-top: 20px;
                    margin-left: 20px;
                    
                }
                #a521{
                    width: 150px;
                    height: 30px;
                    margin-top: 20px;
                    margin-left: 50px;
                }
                #a53{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    line-height: 50px;
                    margin-left: 20px;
                }
                .a54{
                    width: 400px;
                    height: 100px;
                    border: 1px solid red;
                    background-color: white;
                    box-shadow: 8px 8px 8px gray;
                    margin-top: 20px;
                    transition: 2s;
                }
                #a6{
                    width: 1000px;
                    height: 200px;
                    border: 1px solid red;
                    background-color: white;
                    box-shadow: 8px 8px 8px gray;
                    margin-top: 10px;
                    overflow: hidden;
                }
                #a61{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    line-height: 50px;
                    margin-left: 20px;
                }
                #a62{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    margin-top: 20px;
                    margin-left: 20px;
                    
                }
                #a63{
                    width: 1000px;
                    height: 50px;
                    border: 1px solid red;
                    margin-top: 10px;
                    margin-left: 20px;
                    
                }
            </style>
        </head>
        <body>    
            <div id="a1">
                <div id="a11">
                    1、while循环
                </div>
                
                <div id="a2">
                    <input type="submit" name="a21" id="a21" value="循环出现提示框5次" onclick="b1()"/>
                </div>
                
            </div>
            <div id="a4">
                <div id="a41">
                    2、for循环
                </div>
                <div id="a42">
                    <input type="submit" name="a421" id="a421" value="批量修改样式" onclick="b2()"/>
                </div>
                <div id="a43">
                    固定元素个数
                </div>
                <div id="a44">
                    <div class="a441">
                        
                    </div>
                    <div class="a441">
                        
                    </div>
                    <div class="a441">
                        
                    </div>
                    <div class="a441">
                        
                    </div>
                </div>
            </div>
            <div id="a5">
                <div id="a51">
                    if判断for循环
                </div>
                <div id="a52">
                    <input type="submit" name="a521" id="a521" value="批量修改样式" onclick="b3()"/>
                </div>
                <div id="a53">
                    元素个数不定
                </div>
                <div class="a54">
                    
                </div>
                <div class="a54">
                    
                </div>
                <div class="a54">
                    
                </div>
                
            </div>
            <div id="a6">
                <div id="a61">
                    if判断for循环
                </div>
                <div id="a62">
                    <input type="checkbox" name="chk" id="1a" value="2" />
                    <input type="checkbox" name="chk" id="2b" value="3" />
                    <input type="checkbox" name="chk" id="3c" value="4" />
                    <input type="checkbox" name="chk" id="4d" value="6" />
                    <input type="checkbox" name="chk" id="5e" value="5" />
                    <input type="checkbox" name="chk" id="6f" value="7" />
                </div>
                <div id="a63">
                    <input type="submit" name="qx" id="qx" value="全选" onclick="b4()"/>
                    <input type="submit" name="a632" id="a632" value="不选" onclick="b5()"/>
                    <input type="submit" name="a633" id="a633" value="反选" onclick="b6()"/>
                </div>
            </div>
        </body>
    </html>
    <script type="text/javascript">
        function b1(){
            for(var i= 0;i<5;i++){
                alert("这是第"+i+"弹窗")
            }        
        }
        function b2(){
            var a421 = document.getElementsByClassName("a441");
            for(var i = 0;i<a421.length;i++){
                a421[i].style.backgroundColor = "yellow"
            }
        }
        function b3(){
            var a521 = document.getElementsByClassName("a54");
            /*if(a54.style.background == "white"){*/
                for (var i =0;i < a521.length ;i++){
                    a521[i].style.backgroundColor = "yellow";
                    a521[i].style.height = "100px";
                    a521[i].style.width = "500px";
                }
        /*}*/
            /*else{
                    a521[i].style.width = "400px";
                    a521[i].style.height = "100px";
                    a521[i].style.background-color = "white";
            }*/
        }
        function b4 (){
            var chk = document.getElementsByClassName("chk");
            var qx = document.getElementsByClassName("qx");
            for(var i = 0;i<chk.length;i++){
                if(qx.checked){
                    chk[i].checked = true;
                }
            }
        }
    </script>
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  • 原文地址:https://www.cnblogs.com/hankai2735/p/8857152.html
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