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Forkwell Jobsで見ている求人一覧の平均年収を出すブックマークレット - laiso http://laiso.hatenablog.com/entry/2014/02/14/Forkwell_Jobs%E3%81%A7%E8%A6%8B%E3%81%A6%E3%81%84%E3%82%8B%E6%B1%82%E4%BA%BA%E4%B8%80%E8%A6%A7%E3%81%AE%E5%B9%B3%E5%9D%87%E5%B9%B4%E5%8F%8E%E3%82%92%E5%87%BA%E3%81%99%E3%83%96%E3%83%83%E3%82%AF%E3%83%9E
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// Convert NodeList to Array http://davidwalsh.name/nodelist-array | |
var rangePairs = [].slice.call(document.querySelectorAll('dd.jobs-list-annual-salary')); | |
var averages = rangePairs.map(function(pair){ | |
var nums = pair.querySelectorAll('span.num'); | |
var floor = parseInt(nums[0].innerText) || 0; | |
var ceiling = parseInt(nums[1].innerText.replace(',', '')) || floor; | |
return parseInt((floor + ceiling)/2); | |
}); | |
var sum = averages.reduce(function(a, b){ return a+b }); | |
var answer = parseInt(sum/averages.length); | |
alert("このページの平均年収は"+answer+"万円です。"); |
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