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hn job query search
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| function query() { | |
| var | |
| // HN is done with very unsemantic classes. | |
| job_list = Array.prototype.slice.call(document.querySelectorAll('.c5a,.cae,.c00,.c9c,.cdd,.c73,.c88')), | |
| query_list = Array.prototype.slice.call(arguments), | |
| shown = 0, total = job_list.length; | |
| // Traverses up the dom stack trying to find a match of a specific class | |
| function up_to(node, klass) { | |
| if (node.classList.contains(klass)) { | |
| return node; | |
| } | |
| if(node === document.body) { | |
| throw new Exception(); | |
| } | |
| return up_to(node.parentNode, klass); | |
| } | |
| function display(node, what) { | |
| up_to(node, 'athing').style.display = what; | |
| } | |
| // If we have a RegEx, return it | |
| // Otherwise make it a case insensitive regex. | |
| function destring(what) { | |
| return what.test ? what : new RegExp(what.toString(), 'i'); | |
| } | |
| // Hide all the postings | |
| job_list.forEach(function(node) { | |
| display(node, 'none'); | |
| }); | |
| query_list.forEach(function(query) { | |
| if (query.forEach) { | |
| var and_query_list = query.map(destring); | |
| job_list.forEach(function(node) { | |
| var | |
| doesMatch = true, | |
| toTest = node.innerHTML; | |
| and_query_list.forEach(function(query) { | |
| doesMatch &= toTest.search(query) > -1; | |
| }) | |
| if(doesMatch) { | |
| display(node, 'block'); | |
| shown ++; | |
| } | |
| }); | |
| } else { | |
| query = destring(query); | |
| job_list.forEach(function(node) { | |
| if(node.innerHTML.search(query) > -1) { | |
| display(node, 'block'); | |
| shown ++; | |
| } | |
| }); | |
| } | |
| }); | |
| return {shown: shown, total: total} | |
| } |
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