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使CSS3家谱IE8兼容

internet-explorer-8 css jquery

Bram Vanroy · 技术社区 · 10 年前

我想使用 this great CSS3 family tree ,但我需要IE8的支持。主要问题似乎是 :before 和 :after 元素,如下图所示。(第一个孙子不应该排到左边,最后一个孙子不该排到右边。)

IE8 screw things up

我已经尝试过jQuery回退,但没有成功。这里有一个 JSFiddle 要玩,代码如下。

// Add classes for old IE
jQuery(".tree li a:only-child, .tree li:only-child").addClass("only-child");

/*Now the CSS*/
 * {
    margin: 0;
    padding: 0;
}
.tree ul {
    padding-top: 20px;
    position: relative;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}
.tree li {
    float: left;
    text-align: center;
    list-style-type: none;
    position: relative;
    padding: 20px 5px 0 5px;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}
/*We will use ::before and ::after to draw the connectors*/
 .tree li:before, .tree li:after {
    content:'';
    position: absolute;
    top: 0;
    right: 50%;
    border-top: 1px solid #ccc;
    width: 50%;
    height: 20px;
}
.tree li:after {
    right: auto;
    left: 50%;
    border-left: 1px solid #ccc;
}
/*We need to remove left-right connectors from elements without 
any siblings*/
 .tree li.only-child:after, .tree li.only-child:before {
    display: none;
}
/*Remove space from the top of single children*/
 .tree li.only-child {
    padding-top: 0;
}
/*Remove left connector from first child and 
right connector from last child*/
 .tree li:first-child:before, .tree li:last-child:after {
    border: 0 none;
}
/*Adding back the vertical connector to the last nodes*/
 .tree li:last-child:before {
    border-right: 1px solid #ccc;
    border-radius: 0 5px 0 0;
    -webkit-border-radius: 0 5px 0 0;
    -moz-border-radius: 0 5px 0 0;
}
.tree li:first-child:after {
    border-radius: 5px 0 0 0;
    -webkit-border-radius: 5px 0 0 0;
    -moz-border-radius: 5px 0 0 0;
}
/*Time to add downward connectors from parents*/
 .tree ul ul:before {
    content:'';
    position: absolute;
    top: 0;
    left: 50%;
    border-left: 1px solid #ccc;
    width: 0;
    height: 20px;
}
.tree li a {
    border: 1px solid #ccc;
    padding: 5px 10px;
    text-decoration: none;
    color: #666;
    font-family: arial, verdana, tahoma;
    font-size: 11px;
    display: inline-block;
    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}


/*Time for some hover effects*/

/*We will apply the hover effect the the lineage of the element also*/
 .tree li a:hover, .tree li a:hover+ul li a {
    background: #c8e4f8;
    color: #000;
    border: 1px solid #94a0b4;
}
/*Connector styles on hover*/
 .tree li a:hover+ul li::after, .tree li a:hover+ul li::before, .tree li a:hover+ul::before, .tree li a:hover+ul ul::before {
    border-color: #94a0b4;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>

<!-- Borrowed from http://thecodeplayer.com/walkthrough/css3-family-tree -->
<div class="tree">
    <ul>
        <li>	<a href="#">Parent</a>

            <ul>
                <li>	<a href="#">Child</a>

                    <ul>
                        <li>	<a href="#">Grand Child</a>

                        </li>
                    </ul>
                </li>
                <li>	<a href="#">Child</a>

                    <ul>
                        <li><a href="#">Grand Child</a>
                        </li>
                        <li>	<a href="#">Grand Child</a>

                            <ul>
                                <li>	<a href="#">Great Grand Child</a>

                                </li>
                                <li>	<a href="#">Great Grand Child</a>

                                </li>
                                <li>	<a href="#">Great Grand Child</a>

                                </li>
                            </ul>
                        </li>
                        <li><a href="#">Grand Child</a>
                        </li>
                    </ul>
                </li>
            </ul>
        </li>
    </ul>
</div>

1 回复 | 直到 9 年前

Alexander O'Mara 10 年前

造成额外边界的问题是 :first-child 这个 :last-child 伪类在IE8及以下版本中不可用。此无法识别的选择器的存在将使整个规则无效,导致IE删除以下规则。

/*Remove left connector from first child and 
right connector from last child*/
.tree li:first-child:before, .tree li:last-child:after {
    border: 0 none;
}
/*Adding back the vertical connector to the last nodes*/
.tree li:last-child:before {
    border-right: 1px solid #ccc;
    border-radius: 0 5px 0 0;
    -webkit-border-radius: 0 5px 0 0;
    -moz-border-radius: 0 5px 0 0;
}

要解决这个问题,可以使用相同的jQuery addClass 这些元素的策略。

JavaScript:

jQuery(".tree li:last-child").addClass("last-child");

CSS:

/*Remove left connector from first child and 
right connector from last child*/
.tree li:first-child:before, .tree li.last-child:after {
    border: 0 none;
}
/*Adding back the vertical connector to the last nodes*/
.tree li.last-child:before {
    border-right: 1px solid #ccc;
    border-radius: 0 5px 0 0;
    -webkit-border-radius: 0 5px 0 0;
    -moz-border-radius: 0 5px 0 0;
}

IE8中的屏幕截图:

enter image description here

工作示例( JSFiddle ):

$(window).load(function(){
// Add classes for old IE
	jQuery(".tree li a:only-child, .tree li:only-child").addClass("only-child");
	jQuery(".tree li:last-child").addClass("last-child");

});

/*Now the CSS*/
 * {
    margin: 0;
    padding: 0;
}
.tree ul {
    padding-top: 20px;
    position: relative;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}
.tree li {
    float: left;
    text-align: center;
    list-style-type: none;
    position: relative;
    padding: 20px 5px 0 5px;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}
/*We will use ::before and ::after to draw the connectors*/
 .tree li:before, .tree li:after {
    content:'';
    position: absolute;
    top: 0;
    right: 50%;
    border-top: 1px solid #ccc;
    width: 50%;
    height: 20px;
}
.tree li:after {
    right: auto;
    left: 50%;
    border-left: 1px solid #ccc;
}
/*We need to remove left-right connectors from elements without 
any siblings*/
 .tree li.only-child:after, .tree li.only-child:before {
    display: none;
}
/*Remove space from the top of single children*/
 .tree li.only-child {
    padding-top: 0;
}
/*Remove left connector from first child and 
right connector from last child*/
.tree li:first-child:before, .tree li.last-child:after {
    border: 0 none;
}
/*Adding back the vertical connector to the last nodes*/
 .tree li.last-child:before {
    border-right: 1px solid #ccc;
    border-radius: 0 5px 0 0;
    -webkit-border-radius: 0 5px 0 0;
    -moz-border-radius: 0 5px 0 0;
}
.tree li:first-child:after {
    border-radius: 5px 0 0 0;
    -webkit-border-radius: 5px 0 0 0;
    -moz-border-radius: 5px 0 0 0;
}
/*Time to add downward connectors from parents*/
 .tree ul ul:before {
    content:'';
    position: absolute;
    top: 0;
    left: 50%;
    border-left: 1px solid #ccc;
    width: 0;
    height: 20px;
}
.tree li a {
    border: 1px solid #ccc;
    padding: 5px 10px;
    text-decoration: none;
    color: #666;
    font-family: arial, verdana, tahoma;
    font-size: 11px;
    display: inline-block;
    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}


/*Time for some hover effects*/

/*We will apply the hover effect the the lineage of the element also*/
 .tree li a:hover, .tree li a:hover+ul li a {
    background: #c8e4f8;
    color: #000;
    border: 1px solid #94a0b4;
}
/*Connector styles on hover*/
 .tree li a:hover+ul li::after, .tree li a:hover+ul li::before, .tree li a:hover+ul::before, .tree li a:hover+ul ul::before {
    border-color: #94a0b4;
}

<script type="text/javascript" src="//code.jquery.com/jquery-1.11.0.js"></script>


<!-- Borrowed from http://thecodeplayer.com/walkthrough/css3-family-tree -->
<div class="tree">
    <ul>
        <li class="only-child">	<a href="#">Parent</a>

            <ul>
                <li>	<a href="#">Child</a>

                    <ul>
                        <li class="only-child">	<a class="only-child" href="#">Grand Child</a>

                        </li>
                    </ul>
                </li>
                <li>	<a href="#">Child</a>

                    <ul>
                        <li><a class="only-child" href="#">Grand Child</a>
                        </li>
                        <li>	<a href="#">Grand Child</a>

                            <ul>
                                <li>	<a class="only-child" href="#">Great Grand Child</a>

                                </li>
                                <li>	<a class="only-child" href="#">Great Grand Child</a>

                                </li>
                                <li>	<a class="only-child" href="#">Great Grand Child</a>

                                </li>
                            </ul>
                        </li>
                        <li><a class="only-child" href="#">Grand Child</a>
                        </li>
                    </ul>
                </li>
            </ul>
        </li>
    </ul>
</div>