README

CSSPrefix

CSS Prefixer for JavaScript code.

The simple library to get vendor-prefixed name (e.g. webkitFlex) and vendor-prefixed value (e.g. -moz-inline-grid) of CSS property.
This is not pre-compiler for style-sheet, this is used to handle those in JavaScript code.

Usage

Load CSSPrefix into your web page.

<script src="cssprefix.min.js"></script>

Methods

`CSSPrefix.getName`

prefixedName = CSSPrefix.getName(name)

Return a vendor-prefixed name of CSS property, or an original name that doesn't require vendor-prefix. If nothing was found, return an undefined.

For example:

prefixedName = CSSPrefix.getName('text-emphasis'); // 'textEmphasis' also is accepted
console.log(prefixedName);
// -> "webkitTextEmphasis" on Chrome
// -> "textEmphasis" on Firefox

prefixedName = CSSPrefix.getName('column-count'); // 'columnCount' also is accepted
console.log(prefixedName);
// -> "columnCount" on Chrome
// -> "MozColumnCount" on Firefox

`CSSPrefix.getValue`

prefixedValue = CSSPrefix.getValue(name, value)

Return a vendor-prefixed value of CSS property, or an original value that doesn't require vendor-prefix. If value is an Array that includes multiple values, try it with each value until any one of them is found. If nothing was found, return an undefined.
name can be an original name even if it requires vendor-prefix.

For example:

prefixedValue = CSSPrefix.getValue('cursor', 'grab');
console.log(prefixedValue);
// -> "-webkit-grab" on Chrome
// -> "grab" on Firefox

prefixedValue = CSSPrefix.getValue('display', ['inline-grid', 'block']);
console.log(prefixedValue);
// -> "block" on Chrome
// -> "-moz-inline-grid" on Firefox

Differences from jQuery

jQuery also can find the vendor-prefixed name. But it can't find the vendor-prefixed value. And your code can't get the vendor-prefixed name that jQuery found.
And jQuery doesn't have cache. That affects performance.

sample

This is older version.

Reported by Benchmark.js.
Test Code:

var elmJq = $('#elm4jquery'),
  elmCp = document.getElementById('elm4cssprefix');

// jQuery name
function jqName() {
  elmJq.css('column-width', '5px');
  elmJq.css('column-width', '10px');
}

// CSSPrefix name
function cpName() {
  elmCp.style[CSSPrefix.getName('column-width')] = '5px';
  elmCp.style[CSSPrefix.getName('column-width')] = '10px';
}

// jQuery value
function jqValue() {
  // jQuery can't find vendor-prefixed value.
  elmJq.css('cursor', 'grab,-webkit-grab');
  elmJq.css('cursor', 'grabbing,-webkit-grabbing');
}

// CSSPrefix value
function cpValue() {
  elmCp.style[CSSPrefix.getName('cursor')] = CSSPrefix.getValue('cursor', 'grab');
  elmCp.style[CSSPrefix.getName('cursor')] = CSSPrefix.getValue('cursor', 'grabbing');
}

Breaking Changes

v2.0

CSSPrefix.getProp and CSSPrefix.setValue were removed, then CSSPrefix.getName and CSSPrefix.getValue were added. The CSSPrefix.getValue doesn't set a value.
Both CSSPrefix.getName and CSSPrefix.getValue don't require an element.
Both CSSPrefix.getName and CSSPrefix.getValue return undefined if nothing was found. Older methods returned an empty string but some CSS properties accept empty string, and that couldn't differentiate "accepted empty string" and "value not found".

v1.0

Since v1.0, the repository name and its package name were unified, and the css-prefix.min.js file also was renamed to cssprefix.min.js.

Usage no npm install needed!