我一直在尝试将插入符号应用于 Bootstrap 3 中的输入组元素。到目前为止失败。尝试对插入的伪元素使用表格单元格显示,尝试绝对定位,尝试使用 content 属性来显示 Web 字体插入符号而不是我首选的 CSS 三角形插入符号。只是不能把我的头绕在这个上面。
这是一个 JSFiddle(红色边框是我希望插入符号显示的位置)。
.input-group .input-group-addon:last-child:before,
.input-group .input-group-btn:last-child:before,
.input-group .input-group-addon:not(:last-child):before,
.input-group .input-group-btn:not(:last-child):before {
position: absolute;
content: '';
width: 0;
height: 0;
border: 10px solid transparent;
margin: auto;
top: 0;
bottom: 0;
z-index: 1000;
}
.input-group .input-group-addon:last-child:before,
.input-group .input-group-btn:last-child:before {
border-right-color: red;
right: 0;
}
.input-group .input-group-addon:not(:last-child):before,
.input-group .input-group-btn:not(:last-child):before {
border-left-color: red;
left: 0;
}
编辑:根据一个答案,我修改了现在在除 IE10 及以下所有版本中都可以正常工作的样式。IE 将左对齐的插入符号偏移input-group
,4px
如下所示http://jsfiddle.net/W8mFS/3/。任何想法如何解决这个问题?
更新的 CSS:
.input-group.input-group-caret span:after,
.input-group.input-group-caret > input + span:before {
position: absolute;
content: '';
width: 0;
height: 0;
top: 0;
bottom: 0;
margin: auto;
border: 10px solid transparent;
}
.input-group.input-group-caret > input + span:before {
border-right-color: #cccccc;
margin-left: -20px;
}
.input-group.input-group-caret > input + span:empty:before {
margin-left: -44px;
}
.input-group.input-group-caret > input + span:after {
border-left-color: transparent;
}
.input-group.input-group-caret span:after {
border-left-color: #cccccc;
}
.input-group.input-group-caret .input-group-addon {
padding: 0;
}
.input-group.input-group-caret .input-group-addon i {
font-style: normal;
margin-left: 12px;
padding-right: 12px;
}
.input-group.input-group-caret .input-group-addon:empty {
padding-left: 24px;
}
更新:在这里增加了input-group
JSFiddle 的大小:http: //jsfiddle.net/W8mFS/4/。
LESS 代码显示了使用 Bootstrap 变量来控制插入符号大小、边距和填充:
@import "path_to_bootstrap/less/mixins";
@import "path_to_bootstrap/less/variables";
// input-group caret size
@caret-size-base: ceil(@font-size-base * 0.70); // ~10px;
@caret-size-large: ceil(@caret-size-base * 1.20); // ~12px;
@caret-size-small: ceil(@caret-size-base * 0.80); // ~8px;
// input-group caret
.input-group.input-group-caret {
span:after,
> input + span:before {
position: absolute;
content: '';
width: 0;
height: 0;
// v-align to middle
top: 0;
bottom: 0;
margin: auto;
border: @caret-size-base solid transparent;
}
> input + span:before { border-right-color: @input-border; margin-left: -( 2 * @caret-size-base ); } // right aligned
> input + span:empty:before { margin-left: -(( 2 * @padding-base-horizontal ) + ( 2 * @caret-size-base )); } // right aligned
> input + span:after { border-left-color: transparent; } // right aligned
span:after { border-left-color: @input-border; } // left aligned
// sizing
&.input-group-sm {
span:after,
> input + span:before {
border: @caret-size-small solid transparent;
}
> input + span:before { border-right-color: @input-border; margin-left: -( 2 * @caret-size-small ); } // right aligned
> input + span:empty:before { margin-left: -(( 2 * @padding-base-horizontal ) + ( 2 * @caret-size-small )); } // right aligned
> input + span:after { border-left-color: transparent; } // right aligned
span:after { border-left-color: @input-border; } // left aligned
}
&.input-group-lg {
span:after,
> input + span:before {
border: @caret-size-large solid transparent;
}
> input + span:before { border-right-color: @input-border; margin-left: -( 2 * @caret-size-large ); } // right aligned
> input + span:empty:before { margin-left: -(( 2 * @padding-base-horizontal ) + ( 2 * @caret-size-large )); } // right aligned
> input + span:after { border-left-color: transparent; } // right aligned
span:after { border-left-color: @input-border; } // left aligned
}
// input-group caret alignment fixes
.input-group-addon {
padding: 0;
i {
font-style: normal;
margin-left: @padding-base-horizontal;
padding-right: @padding-base-horizontal;
}
// fix-up alignment of empty addon
&:empty {
padding-left: 2 * @padding-base-horizontal;
}
}
}