{"id":2016,"date":"2019-03-20T23:28:51","date_gmt":"2019-03-20T22:28:51","guid":{"rendered":"https:\/\/solidt.eu\/site\/?p=2016"},"modified":"2022-07-25T08:35:43","modified_gmt":"2022-07-25T07:35:43","slug":"javascript-isnumber","status":"publish","type":"post","link":"https:\/\/solidt.eu\/site\/javascript-isnumber\/","title":{"rendered":"Javascript isNumber()"},"content":{"rendered":"\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">const isNumber = v => (typeof v === 'number' || (typeof v === 'string' &amp;&amp; v.trim() !== ''))  ? !Number.isNaN(Number(v)) : false;\n\n\/\/ isNumber('') => false\n\/\/ isNumber(' ') => false\n\/\/ isNumber('\\t') => false\n\/\/ isNumber('$4') => false\n\/\/ isNumber('abc') => false\n\/\/ isNumber('4e') => false\n\/\/ isNumber(true) => false\n\n\/\/ isNumber('4e1') => true\n\/\/ isNumber('   4 ') => true\n\/\/ isNumber(4) => true\n\/\/ isNumber('0') => true\n\/\/ isNumber(0) => true\n\/\/ isNumber(-0) => true<\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[5,4,1],"tags":[],"class_list":["post-2016","post","type-post","status-publish","format-standard","hentry","category-javascript","category-programming","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/2016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/comments?post=2016"}],"version-history":[{"count":1,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/2016\/revisions"}],"predecessor-version":[{"id":2017,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/2016\/revisions\/2017"}],"wp:attachment":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/media?parent=2016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/categories?post=2016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/tags?post=2016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}