Created
March 23, 2012 12:00
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Placeholder mixin for Sass
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// Placeholder @mixin for Sass | |
// | |
// A mixin to style placeholders in HTML5 form elements. | |
// Includes also a .placeholder class to be used with a polyfill e.g. | |
// https://github.com/mathiasbynens/jquery-placeholder | |
// Requires Sass 3.2. | |
// | |
// Example usage (.scss): | |
// | |
// input { | |
// @include placeholder { | |
// /* styles for placeholder here */ | |
// } | |
// } | |
// | |
@mixin placeholder { | |
&.placeholder { @content } | |
&:-moz-placeholder { @content } | |
&::-webkit-input-placeholder { @content } | |
} |
In Sass 3.4 you can use this snippet to work both nested and unnested rules
@mixin optional-at-root($sel) {
@at-root #{if(not &, $sel, selector-append(&, $sel))} {
@content;
}
}
@mixin placeholder {
@include optional-at-root('::-webkit-input-placeholder') {
@content;
}
@include optional-at-root(':-moz-placeholder') {
@content;
}
@include optional-at-root('::-moz-placeholder') {
@content;
}
@include optional-at-root(':-ms-input-placeholder') {
@content;
}
}
Usage:
.foo {
@include placeholder {
color: green;
}
}
@include placeholder {
color: red;
}
Output:
.foo::-webkit-input-placeholder {
color: green;
}
.foo:-moz-placeholder {
color: green;
}
.foo::-moz-placeholder {
color: green;
}
.foo:-ms-input-placeholder {
color: green;
}
::-webkit-input-placeholder {
color: red;
}
:-moz-placeholder {
color: red;
}
::-moz-placeholder {
color: red;
}
:-ms-input-placeholder {
color: red;
}
From this question https://stackoverflow.com/a/17181946
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