Fast way to check if I'm adding duplicate css (if possible in coda)?
Some text editors will underline duplicated css.
Good text editor: atom text editor
some tips for you so you wont need any text editor auto checkers:
- Keep your css in order.
example:
body{}
navbar{}
footer{}
- 2 Use comments to know what you are styling so it will be easy to continue after brake.
- 3.keep class/id names clear! For example use
.navbar / #navbar
Dont use something like.thisasdafclassbadexample
How is a CSS rule evaluated, with respect to duplicate (fallback) attributes?
You are right on your assumptions. According to MDN: CSS If a browser encounters a declaration or rule it doesn't understand, it just skips it completely without applying it or throwing an error.
Read here: https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/Cross_browser_testing/HTML_and_CSS
Find duplicate CSS classes with WebStorm
there is no way to do this currently; please vote for WEB-74 to be notified on any progress with this feature
Tool to identify repeated CSS selectors across two stylesheets
There is a firefox plugin called Dust me selectores which is designed to find unused CSS code. It may be what you're looking for.
How to remove duplicate CSS styles from a string using JavaScript?
The OP asked if it could be done and specified (as I read it) the removal of duplicate rules. A simplistic approach:
- Split by rule end
}
- Trim off white space and re-attach delimiter
- Filter out duplicates
- Join into string
var style = ".button:hover {background: #fff} p.test {font-size: 11px} .button:hover {background: #fff} .button:hover {background: #fff} #one .button {color: #000} #two .button {color: #000}";
var uniqueRules = style
.split('}')
.map(function(rule) {
return rule ? rule.trim() + '}' : '';
})
.filter(function(rule, index, self) {
return self.indexOf(rule) === index;
})
.join(' ');
console.log(uniqueRules);
Checking for selector duplicates in a css file with javascript
let s = `.u-br, .u-nr {
blah blah
}
.u-tr {
blah .blah
}`;
let selectors = s.match(/\.-?[_a-zA-Z]+[\w-]*(?=[^{}]*\{)/g);
function hasDuplicates(array) {
return (new Set(array)).size !== array.length;
}
console.log(hasDuplicates(selectors));//false;
//Find the duplicates
var sorted_arr = selectors.slice().sort();
var results = [];
for (var i = 0; i < sorted_arr.length - 1; i++) {
if (sorted_arr[i + 1] == sorted_arr[i]) {
results.push(sorted_arr[i]);
}
}
console.log(results);
VS Code extension to highlight duplicates css properties
There are built-in settings which will flag duplicate properties :
// Do not use duplicate style definitions.
"css.lint.duplicateProperties": "ignore",
// Do not use duplicate style definitions.
"less.lint.duplicateProperties": "ignore",
// Do not use duplicate style definitions.
"scss.lint.duplicateProperties": "ignore"
Options are ignore
, warning
and error
. Default is "ignore
".
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