{"id":10482,"date":"2022-09-23T21:11:59","date_gmt":"2022-09-23T15:41:59","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-check-if-username-already-exists-closed\/"},"modified":"2022-09-23T21:11:59","modified_gmt":"2022-09-23T15:41:59","slug":"solved-check-if-username-already-exists-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-check-if-username-already-exists-closed\/","title":{"rendered":"[Solved] Check if username already exists [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-12059312\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"12059312\" data-parentid=\"12059285\" 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>In the onblur event of the text box, get the value of textbox and using jQuery ajax, make a call to a server page where you check it and return appropriate results. based on the results show the message to user (Available or Not Available)<\/p>\n<p>Include jQuery in your page and have this script also<\/p>\n<pre><code>$(function(){\n  $(\"#txtUserName\").blur(function() {\n     var userName=$(this).val();\n     if(userName!=\"\")\n     {\n       $.get(\"checkusername.aspx?username=\"+userName+\"&amp;t=\"+$.now(),function(data){\n           if(data==\"1\")\n           {\n             $(\"#msgDiv\").html(\"Not Available\");             \n           } \n           else\n           {\n             $(\"#msgDiv\").html(\"Available :) \");\n           } \n\n       });    \n     }    \n  });   \n\n});\n<\/code><\/pre>\n<p>Assumuing <code>checkusername.aspx<\/code> page will read the querystring value and check in the database and return(Response.Write()) &#8220;1&#8221; or &#8220;0&#8221; <\/p>\n<p>I prefer to use a Generic handler (.ASHX file) to do the server side checking instead of using the aspx file.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Check if username already exists [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] In the onblur event of the text box, get the value of textbox and using jQuery ajax, make a call to a server page where you check it and return appropriate results. based on the results show the message to user (Available or Not Available) Include jQuery in your page and have this script &#8230; <a title=\"[Solved] Check if username already exists [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-check-if-username-already-exists-closed\/\" aria-label=\"More on [Solved] Check if username already exists [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":[334,751,333,388],"class_list":["post-10482","post","type-post","status-publish","format-standard","hentry","category-solved","tag-ajax","tag-asp-net","tag-javascript","tag-jquery"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Check if username already exists [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-check-if-username-already-exists-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Check if username already exists [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] In the onblur event of the text box, get the value of textbox and using jQuery ajax, make a call to a server page where you check it and return appropriate results. based on the results show the message to user (Available or Not Available) Include jQuery in your page and have this script ... 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