如何使用jQuery隐藏和显示div

Question

我正在开发一个用于CI测试的Bootstrap网站。我创建了一个带有下拉菜单的div #chooseTest，用户可以使用该菜单选择要执行的测试类型。

编辑： 该文件是.hbs文件（把手）。经过一番挖掘，我意识到带有jQuery的.js文件，甚至还没有运行......

The website

当用户做出选择时，#chooseTest不应该是可见的（它仍然是：带有文本字段下的下拉菜单的Div）。并且适当的div应该在其位置可见：#mavenForm例如（带有复选框的div：查找错误和检查样式）。

现在什么都没有用。启动网站时，＃mavenForm可见，下拉菜单仅用于显示。代码有什么问题？

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 $(function () {
    $("#mavenForm").hide();

    $("#dropDownJava").click(function () {
        $("#chooseTest").hide();
        $("#mavenForm").show();

    });
});

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<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.2.3/jquery.min.js"></script>
<div id="gitForm">
        <div class="Aligner">
            <div class="container h-100 d-flex justify-content-center">
                <div class="col-md-6">
                    <div class=card>
                        <div class="card-block">
                            <form class="form-create" action="/" method="post">
                                <div class="form-group">
                                    <label id="nameLabel" for="projectNameInput">Name your
                                        project</label>
                                    <input type="text" class="form-control" name="jobname" id="projectNameInput"
                                           placeholder="Enter a A project name you can live with">
                                </div>
                                <div class="form-group">
                                    <label id="gitLabel" for="repoInput">Enter your Git
                                        repository</label>
                                    <input type="text" class="form-control" name="gitrep" id=repoInput
                                           placeholder="A valid Gitrepo...">
                                </div>

<!-- The div #chooseTest which is to be replaced -->
                                <div id="chooseTest">
                                    <div class="btn-group">
                                        <button type="button" class="btn btn-outline-success dropdown-toggle"
                                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                            Choose Test
                                        </button>
                                        <div class="dropdown-menu">
                                            <a class="btn btn-outline-success dropdown-item" id="dropDownJava"
                                               href="#mavenForm">Java</a>
                                        </div>
                                    </div>
                                </div>

<!-- The div #mavenForm that shouldn't be visible when the website launches -->
                                <div id="mavenForm">
                                    <div class="form-group">
                                        <div class="form-check">
                                            <label class="custom-control custom-checkbox">
                                                <input type="checkbox" class="custom-control-input" value="FindBugs">
                                                <span class="custom-control-indicator"></span>
                                                <span class="custom-control-description ml-4">FindBugs</span>
                                            </label>
                                        </div>
                                        <div class="form-check">
                                            <label class="custom-control custom-checkbox">
                                                <input type="checkbox" class="custom-control-input" value="CheckStyle">
                                                <span class="custom-control-indicator"></span>
                                                <span class="custom-control-description ml-4">CheckStyle</span>
                                            </label>
                                        </div>
                                    </div>
                                </div>
                                <div>

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Answer 1

您的代码似乎与jQuery 2.1.1以及您的jQuery函数在页面就绪函数中正常工作。请参阅下面的代码段以查看：

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$(function(){
  $("#mavenForm").hide();  
    $("#dropDownJava").click(function(){
        $("#chooseTest").hide();
        $("#mavenForm").show();
  });
});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="gitForm">
        <div class="Aligner">
            <div class="container h-100 d-flex justify-content-center">
                <div class="col-md-6">
                    <div class=card>
                        <div class="card-block">
                            <form class="form-create" action="/" method="post">
                                <div class="form-group">
                                    <label id="nameLabel" for="projectNameInput">Name your
                                        project</label>
                                    <input type="text" class="form-control" name="jobname" id="projectNameInput"
                                           placeholder="Enter a A project name you can live with">
                                </div>
                                <div class="form-group">
                                    <label id="gitLabel" for="repoInput">Enter your Git
                                        repository</label>
                                    <input type="text" class="form-control" name="gitrep" id=repoInput
                                           placeholder="A valid Gitrepo...">
                                </div>

<!-- The div #chooseTest which is to be replaced -->
                                <div id="chooseTest">
                                    <div class="btn-group">
                                        <button type="button" class="btn btn-outline-success dropdown-toggle"
                                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                            Choose Test
                                        </button>
                                        <div class="dropdown-menu">
                                            <a class="btn btn-outline-success dropdown-item" id="dropDownJava"
                                               href="#mavenForm">Java</a>
                                        </div>
                                    </div>
                                </div>

<!-- The div #mavenForm that shouldn't be visible when the website launches -->
                                <div id="mavenForm">
                                    <div class="form-group">
                                        <div class="form-check">
                                            <label class="custom-control custom-checkbox">
                                                <input type="checkbox" class="custom-control-input" value="FindBugs">
                                                <span class="custom-control-indicator"></span>
                                                <span class="custom-control-description ml-4">FindBugs</span>
                                            </label>
                                        </div>
                                        <div class="form-check">
                                            <label class="custom-control custom-checkbox">
                                                <input type="checkbox" class="custom-control-input" value="CheckStyle">
                                                <span class="custom-control-indicator"></span>
                                                <span class="custom-control-description ml-4">CheckStyle</span>
                                            </label>
                                        </div>
                                    </div>
                                </div>
                                <div>

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Answer 2

基于JQuery文档： “在文档”准备就绪“之前，页面无法安全操作.jQuery会为您检测到这种状态。$（document）.ready（）中包含的代码只会在页面文档对象模型（DOM）运行时运行准备好执行JavaScript代码。$（window）.on（“load”，function（）{...}）中包含的代码将在整个页面（图像或iframe）（而不仅仅是DOM）准备好后运行。 “

关于jsfiddle的另一个测试：https://jsfiddle.net/1v14syto/

所以你需要做的是用$（document）包围你的jquery代码.ready（function（）{/ *你的代码* /}）

$( document ).ready(function() {
    $('#mavenForm').hide();  
    $('#dropDownJava').click(function(){
        $('#chooseTest').hide();
        $('#mavenForm').show();

});
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
 <div id="gitForm">
        <div class="Aligner">
            <div class="container h-100 d-flex justify-content-center">
                <div class="col-md-6">
                    <div class=card>
                        <div class="card-block">
                            <form class="form-create" action="/" method="post">
                                <div class="form-group">
                                    <label id="nameLabel" for="projectNameInput">Name your
                                        project</label>
                                    <input type="text" class="form-control" name="jobname" id="projectNameInput"
                                           placeholder="Enter a A project name you can live with">
                                </div>
                                <div class="form-group">
                                    <label id="gitLabel" for="repoInput">Enter your Git
                                        repository</label>
                                    <input type="text" class="form-control" name="gitrep" id=repoInput
                                           placeholder="A valid Gitrepo...">
                                </div>

<!-- The div #chooseTest which is to be replaced -->
                                <div id="chooseTest">
                                    <div class="btn-group">
                                        <button type="button" class="btn btn-outline-success dropdown-toggle"
                                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                            Choose Test
                                        </button>
                                        <div class="dropdown-menu">
                                            <a class="btn btn-outline-success dropdown-item" id="dropDownJava"
                                               href="#mavenForm">Java</a>
                                        </div>
                                    </div>
                                </div>

<!-- The div #mavenForm that shouldn't be visible when the website launches -->
                                <div id="mavenForm">
                                    <div class="form-group">
                                        <div class="form-check">
                                            <label class="custom-control custom-checkbox">
                                                <input type="checkbox" class="custom-control-input" value="FindBugs">
                                                <span class="custom-control-indicator"></span>
                                                <span class="custom-control-description ml-4">FindBugs</span>
                                            </label>
                                        </div>
                                        <div class="form-check">
                                            <label class="custom-control custom-checkbox">
                                                <input type="checkbox" class="custom-control-input" value="CheckStyle">
                                                <span class="custom-control-indicator"></span>
                                                <span class="custom-control-description ml-4">CheckStyle</span>
                                            </label>
                                        </div>
                                    </div>
                                </div>
                                <div>