This snippet, to be run in your devtools, finds all numbers in the table on this page
and finds the largest overlaps in an
Bahrain postal codes have a XYY or XXYY format, where X is the municipality and Y is the locality.
Results are printed as info messages. Debug info is grouped.
The first result are all available postal code ranges. The second result is just the municipality ranges.
| (() => { | |
| let numbers = [] | |
| const numericSort = (a, b) => a - b | |
| const resolveAscending = (values) => { | |
| let ranges = [] | |
| let currentRange = null | |
| let previousNumber = null | |
| // Separate, to make code DRY | |
| const assignResult = () => { | |
| if (currentRange !== null && currentRange === previousNumber) { | |
| ranges.push(`${currentRange}`) | |
| } else if (currentRange !== null) { | |
| ranges.push(`${currentRange}-${previousNumber}`) | |
| } | |
| } | |
| values.sort(numericSort) | |
| values.forEach(value => { | |
| if (value - 1 !== previousNumber) { | |
| assignResult() | |
| currentRange = value | |
| } | |
| previousNumber = value | |
| }) | |
| assignResult() | |
| return ranges | |
| } | |
| // Find tables matching '123', '123, 456' and repetatives of that | |
| console.groupCollapsed('Bodies') | |
| document.querySelectorAll('td').forEach(node => { | |
| const nodeText = node.innerText.trim() | |
| if (nodeText.match(/^(\d+, )*\d+$/)) { | |
| console.info('Found match %o in %o', nodeText, node) | |
| const nodeNumbers = nodeText.split(',').map(node => parseInt(node, 10)) | |
| numbers = [...numbers, ...nodeNumbers] | |
| } | |
| }) | |
| console.groupEnd() | |
| // Get full ranges | |
| numbers.sort(numericSort) | |
| console.info('Available number ranges: %o', resolveAscending(numbers)) | |
| // Get code, which is >=100. De-duplicate using a Set | |
| const municipalitiesSet = [...new Set(numbers.map(val => Math.floor(val / 100)))] | |
| console.info('Resolved municipality ranges: %o', resolveAscending(municipalitiesSet)) | |
| })() |