{"id":29143,"date":"2023-01-05T16:45:11","date_gmt":"2023-01-05T11:15:11","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-javascript-error1-closed\/"},"modified":"2023-01-05T16:45:11","modified_gmt":"2023-01-05T11:15:11","slug":"solved-javascript-error1-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-javascript-error1-closed\/","title":{"rendered":"[Solved] Javascript error1 [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-12477791\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"12477791\" data-parentid=\"12477756\" data-score=\"1\" 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>If the problem is that some event handler is still submitting data after showing an <code>alert<\/code> informing of a validation error, you&#8217;ll probably need to make the event handler function return <code>false<\/code> after showing the <code>alert<\/code> , in order to prevent further processing of the event.<\/p>\n<p>As pointed out by @Bergi in his comment, and if you&#8217;re using JQuery or another framework, you might need to use <code>stopPropagation()<\/code> or equivalent. See <\/p>\n<ul>\n<li>How to stop event bubbling on checkbox click<\/li>\n<li>event.preventDefault() vs. return false.<\/li>\n<\/ul>\n<p><strong>UPDATE<\/strong><\/p>\n<p>Seeing the code posted, it might be important to remark that the <code>return false<\/code> is being done inside the <code>IsFieldEmpty<\/code> function. That means that <code>false<\/code> is the return value for <code>IsFieldEmpty<\/code>. Take into account that if you&#8217;re submitting data in a similar way to this: <\/p>\n<pre><code>&lt;input type=\"submit\" onclick=\"IsFieldEmpty()\"&gt;\n<\/code><\/pre>\n<p><code>IsFieldEmpty<\/code> will return false but the event handler won&#8217;t. If it&#8217;s the case, you should change it to: <\/p>\n<pre><code>&lt;input type=\"submit\" onclick=\"return IsFieldEmpty()\"&gt;\n<\/code><\/pre>\n<p>and make <code>IsFieldEmpty<\/code> return <code>true<\/code> when validations are passed.<\/p>\n<pre><code>function IsFieldEmpty() {\n    var txtAgent_Name = document.getElementById(\"&lt;%=txtAgent_Name.ClientID %&gt;\");\n\n    if (txtAgent_Name.value == \"\") {\n        alert('Please Enter Agent Name');\n        txtAgent_Name.focus();\n        return false;\n    }\n    return true;\n}\n<\/code><\/pre>\n<\/p><\/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 Javascript error1 [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] If the problem is that some event handler is still submitting data after showing an alert informing of a validation error, you&#8217;ll probably need to make the event handler function return false after showing the alert , in order to prevent further processing of the event. As pointed out by @Bergi in his comment, &#8230; <a title=\"[Solved] Javascript error1 [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-javascript-error1-closed\/\" aria-label=\"More on [Solved] Javascript error1 [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":[333],"class_list":["post-29143","post","type-post","status-publish","format-standard","hentry","category-solved","tag-javascript"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Javascript error1 [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-javascript-error1-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Javascript error1 [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] If the problem is that some event handler is still submitting data after showing an alert informing of a validation error, you&#8217;ll probably need to make the event handler function return false after showing the alert , in order to prevent further processing of the event. 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