{"id":15040,"date":"2022-10-10T04:40:37","date_gmt":"2022-10-09T23:10:37","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-type-error-cannot-read-property-includes-of-undefined-closed\/"},"modified":"2022-10-10T04:40:37","modified_gmt":"2022-10-09T23:10:37","slug":"solved-type-error-cannot-read-property-includes-of-undefined-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-type-error-cannot-read-property-includes-of-undefined-closed\/","title":{"rendered":"[Solved] Type Error: Cannot read property &#8216;includes&#8217; of undefined [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-63210259\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"63210259\" data-parentid=\"63210186\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>With the little information you give us, I would say that you do not manage the incrementation of your variable <strong>i<\/strong>.<\/p>\n<pre><code>const arrStr = [\"hello\", \"asdf\", \"dfa\"]\narrStr[0].includes(\"hel\") \/\/ -&gt; true\narrStr[1].includes(\"hel\") \/\/ -&gt; false\narrStr[2].includes(\"hel\") \/\/ -&gt; false\narrStr[3].includes(\"hel\") \/\/ -&gt; cannot read property 'includes' of undefined\n<\/code><\/pre>\n<p>If you look at the DCR&#8217;s answers you will see how to manage the incrementation<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Type Error: Cannot read property &#8216;includes&#8217; of undefined [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] With the little information you give us, I would say that you do not manage the incrementation of your variable i. const arrStr = [&#8220;hello&#8221;, &#8220;asdf&#8221;, &#8220;dfa&#8221;] arrStr[0].includes(&#8220;hel&#8221;) \/\/ -&gt; true arrStr[1].includes(&#8220;hel&#8221;) \/\/ -&gt; false arrStr[2].includes(&#8220;hel&#8221;) \/\/ -&gt; false arrStr[3].includes(&#8220;hel&#8221;) \/\/ -&gt; cannot read property &#8216;includes&#8217; of undefined If you look at the DCR&#8217;s &#8230; <a title=\"[Solved] Type Error: Cannot read property &#8216;includes&#8217; of undefined [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-type-error-cannot-read-property-includes-of-undefined-closed\/\" aria-label=\"More on [Solved] Type Error: Cannot read property &#8216;includes&#8217; of undefined [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[361,333],"class_list":["post-15040","post","type-post","status-publish","format-standard","hentry","category-solved","tag-arrays","tag-javascript"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Type Error: Cannot read property &#039;includes&#039; of undefined [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-type-error-cannot-read-property-includes-of-undefined-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Type Error: Cannot read property &#039;includes&#039; of undefined [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] With the little information you give us, I would say that you do not manage the incrementation of your variable i. const arrStr = [&quot;hello&quot;, &quot;asdf&quot;, &quot;dfa&quot;] arrStr[0].includes(&quot;hel&quot;) \/\/ -&gt; true arrStr[1].includes(&quot;hel&quot;) \/\/ -&gt; false arrStr[2].includes(&quot;hel&quot;) \/\/ -&gt; false arrStr[3].includes(&quot;hel&quot;) \/\/ -&gt; cannot read property &#039;includes&#039; of undefined If you look at the DCR&#8217;s ... 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true arrStr[1].includes(\"hel\") \/\/ -&gt; false arrStr[2].includes(\"hel\") \/\/ -&gt; false arrStr[3].includes(\"hel\") \/\/ -&gt; cannot read property 'includes' of undefined If you look at the DCR&#8217;s ... 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