How compare dynamically two paths in the same domain and get the relative path between them?
var path2 = "http://site.net/test1/test2/img/1.jpg" // test example
var path3 = "http://site.net/test1/img/1.jpg" // test example
And get a return path2 to path3 for example = "../../img/"
A better way would be to use path.relative
const path = require('path');
const path2 = "http://example.com/test1/test2/img/1.jpg";
const path3 = "http://example.com/test1/img/1.jpg";
const relativePath = path.relative(path.dirname(path2),path.dirname(path3));
console.log(relativePath); //'../../img'
Unfortunately, JavaScript has no native method for doing this. But the path module in node.js has! This code has been taken from the node.js path module source code
function relative(from, to) {
function trim(arr) {
var start = 0;
for (; start < arr.length; start++) {
if (arr[start] !== '') break;
}
var end = arr.length - 1;
for (; end >= 0; end--) {
if (arr[end] !== '') break;
}
if (start > end) return [];
return arr.slice(start, end - start + 1);
}
var fromParts = trim(from.split('/'));
var toParts = trim(to.split('/'));
var length = Math.min(fromParts.length, toParts.length);
var samePartsLength = length;
for (var i = 0; i < length; i++) {
if (fromParts[i] !== toParts[i]) {
samePartsLength = i;
break;
}
}
var outputParts = [];
for (var i = samePartsLength; i < fromParts.length; i++) {
outputParts.push('..');
}
outputParts = outputParts.concat(toParts.slice(samePartsLength));
return outputParts.join('/');
}
