{"id":15272,"date":"2022-10-11T00:54:08","date_gmt":"2022-10-10T19:24:08","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-unique-random-div-id-using-javascript-closed\/"},"modified":"2022-10-11T00:54:08","modified_gmt":"2022-10-10T19:24:08","slug":"solved-unique-random-div-id-using-javascript-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-unique-random-div-id-using-javascript-closed\/","title":{"rendered":"[Solved] Unique Random DIV ID using javascript [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-36418691\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"36418691\" data-parentid=\"36418470\" data-score=\"3\" 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>Here&#8217;s a simple random string generator in a working snippet so you can see what it generates:<\/p>\n<\/p>\n<div class=\"snippet\" data-lang=\"js\" data-hide=\"false\">\n<div class=\"snippet-code\">\n<pre class=\"snippet-code-js lang-js prettyprint-override\"><code>function makeRandomStr(len) {\r\n  var chars = \"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789\";\r\n  var result = \"\", rand;\r\n  for (var i = 0; i &lt; len; i++) {\r\n    rand = Math.floor(Math.random() * chars.length);\r\n    result += chars.charAt(rand);\r\n  }\r\n  return result;\r\n}\r\n\r\ndocument.getElementById(\"run\").addEventListener(\"click\", function() {\r\n  var div = document.createElement(\"div\");\r\n  div.innerHTML = makeRandomStr(40);\r\n  document.getElementById(\"results\").appendChild(div);\r\n});<\/code><\/pre>\n<pre class=\"snippet-code-html lang-html prettyprint-override\"><code>&lt;button id=\"run\"&gt;Make Random&lt;\/button&gt;&lt;br&gt;&lt;br&gt;\r\n&lt;pre id=\"results\"&gt;&lt;\/pre&gt;<\/code><\/pre>\n<\/div>\n<\/div>\n<p>The ONLY way to guarantee perfectly unique in the world would be to have a central server that was keeping track of all previously allocated strings so no duplicate could ever be used.  But since you did not specify how unique it needed to be, I offered a random string.  If you make it longer, your odds of conflict go to near zero.  <\/p>\n<hr>\n<p>You can also add other environmental elements such as timestamp, mouse positions, etc&#8230; that make it even less likely to ever conflict.<\/p>\n<p>For example, here a timestamp is added to the end of the string so you&#8217;d not only have to accidentally generate the same random string, but you&#8217;d also have to do it at exactly the same clock time.<\/p>\n<\/p>\n<div class=\"snippet\" data-lang=\"js\" data-hide=\"false\">\n<div class=\"snippet-code\">\n<pre class=\"snippet-code-js lang-js prettyprint-override\"><code>function makeRandomStr(len) {\r\n  var chars = \"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789\";\r\n  var result = \"\", rand;\r\n  for (var i = 0; i &lt; len; i++) {\r\n    rand = Math.floor(Math.random() * chars.length);\r\n    result += chars.charAt(rand);\r\n  }\r\n  return result + \"_\" + Date.now();\r\n}\r\n\r\ndocument.getElementById(\"run\").addEventListener(\"click\", function() {\r\n  var div = document.createElement(\"div\");\r\n  div.innerHTML = makeRandomStr(40);\r\n  document.getElementById(\"results\").appendChild(div);\r\n});<\/code><\/pre>\n<pre class=\"snippet-code-html lang-html prettyprint-override\"><code>&lt;button id=\"run\"&gt;Make Random&lt;\/button&gt;&lt;br&gt;&lt;br&gt;\r\n&lt;pre id=\"results\"&gt;&lt;\/pre&gt;<\/code><\/pre>\n<\/div>\n<\/div><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">5<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Unique Random DIV ID using javascript [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Here&#8217;s a simple random string generator in a working snippet so you can see what it generates: function makeRandomStr(len) { var chars = &#8220;abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&#8221;; var result = &#8220;&#8221;, rand; for (var i = 0; i &lt; len; i++) { rand = Math.floor(Math.random() * chars.length); result += chars.charAt(rand); } return result; } document.getElementById(&#8220;run&#8221;).addEventListener(&#8220;click&#8221;, function() { &#8230; <a title=\"[Solved] Unique Random DIV ID using javascript [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-unique-random-div-id-using-javascript-closed\/\" aria-label=\"More on [Solved] Unique Random DIV ID using javascript [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":[464,346,333,388,339],"class_list":["post-15272","post","type-post","status-publish","format-standard","hentry","category-solved","tag-css","tag-html","tag-javascript","tag-jquery","tag-php"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Unique Random DIV ID using javascript [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-unique-random-div-id-using-javascript-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Unique Random DIV ID using javascript [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Here&#8217;s a simple random string generator in a working snippet so you can see what it generates: function makeRandomStr(len) { var chars = &quot;abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&quot;; var result = &quot;&quot;, rand; for (var i = 0; i &lt; len; i++) { rand = Math.floor(Math.random() * chars.length); result += chars.charAt(rand); } return result; } document.getElementById(&quot;run&quot;).addEventListener(&quot;click&quot;, function() { ... 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