{"id":4779,"date":"2020-04-05T04:30:38","date_gmt":"2020-04-05T04:30:38","guid":{"rendered":"https:\/\/vinish.dev\/?p=4779"},"modified":"2025-04-16T19:49:04","modified_gmt":"2025-04-16T14:19:04","slug":"oracle-apex-validation-without-submit-using-javascript-and-ajax-callback","status":"publish","type":"post","link":"https:\/\/vinish.dev\/oracle-apex-validation-without-submit-using-javascript-and-ajax-callback","title":{"rendered":"Oracle Apex Validation Without Submit Using JavaScript and Ajax Callback"},"content":{"rendered":"<p>In my <a href=\"https:\/\/vinish.dev\/oracle-apex-validation-pl-sql-function-returning-error-text\">previous tutorial<\/a>, I have given an example to validate a page item using the PL\/SQL function returning error text. Which executes on <a href=\"https:\/\/vinish.dev\/oracle-apex-submit-page-when-enter-key-pressed\">page submit<\/a>, but if you want to warn the user for an error without the page submit, then you can use the <a href=\"https:\/\/vinish.dev\/oracle-apex-application-process-example\">Ajax Callback<\/a> process and call it using the JavaScript. Below is an example:<\/p>\n<h2>Create an Ajax Callback Process on the Page<\/h2>\n<p>To do this, I have created an Ajax Callback process <code>validate_rollno_ajx<\/code> on that page with the <a href=\"https:\/\/vinish.dev\/oracle-apex-validation-pl-sql-function-returning-error-text\">same code<\/a> I have written for the validation on item <code>p11_roll_no<\/code>. But with a minor change, I have replaced the <code>return<\/code> command with the <code>htp.prn<\/code> and added an extra <code>else<\/code> condition to return the string <code>'SUCCESS'<\/code>.<\/p>\n<pre>Begin\r\n    If substr(:p11_roll_no, 1, 1) != 'S' Then\r\n        htp.prn('Roll number must start with S.');\r\n    Elsif length(:p11_roll_no) &lt; 7 Then\r\n        htp.prn('Roll number must be 7 character long.');\r\n    Else\r\n        htp.prn('SUCCESS');\r\n    End If;\r\nEnd;<\/pre>\n<p>The following is the screenshot for your reference:<\/p>\n<p><a href=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/ajax-callback-process-settings.png\"><img decoding=\"async\" class=\"aligncenter size-large wp-image-4781\" src=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/ajax-callback-process-settings-1024x812.png\" alt=\"Ajax Callback process settings.\" width=\"1024\" height=\"812\" srcset=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/ajax-callback-process-settings-1024x812.png 1024w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/ajax-callback-process-settings-300x238.png 300w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/ajax-callback-process-settings-600x476.png 600w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/ajax-callback-process-settings-768x609.png 768w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/ajax-callback-process-settings-1536x1217.png 1536w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/ajax-callback-process-settings.png 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<h2>Create a Dynamic Action to Execute JavaScript Code<\/h2>\n<p>Then I have <a href=\"https:\/\/vinish.dev\/oracle-apex-dynamic-action-execute-javascript-code-example\">created a dynamic action<\/a> on the item <code>p11_roll_no<\/code> on the event <code>Lost Focus<\/code> to execute the JavaScript code to call the above Ajax Callback process <code>validate_rollno_ajx<\/code>. Below is the example:<\/p>\n<pre>apex.server.process('validate_rollno_ajx',\r\n{\r\n   pageItems : '#P11_ROLL_NO'\r\n}\r\n,\r\n{\r\n   dataType : 'text', success : function(data)\r\n   {\r\n      if(data != 'SUCCESS') apex.message.alert(data);\r\n   }\r\n}\r\n)<\/pre>\n<p>The following is the screenshot for the above settings:<\/p>\n<p><a href=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/da-javascript-code.png\"><img decoding=\"async\" class=\"aligncenter size-large wp-image-4782\" src=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/da-javascript-code-1024x731.png\" alt=\"Dynamic action execute JavaScript Code settings.\" width=\"1024\" height=\"731\" srcset=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/da-javascript-code-1024x731.png 1024w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/da-javascript-code-300x214.png 300w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/da-javascript-code-600x428.png 600w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/da-javascript-code-768x548.png 768w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/da-javascript-code-1536x1096.png 1536w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/da-javascript-code.png 1926w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Now whenever the user will navigate through the page item <code>p11_roll_no<\/code>, it will execute the above JavaScript code and will <a href=\"https:\/\/vinish.dev\/how-to-show-alert-messages-in-oracle-apex\">show the alert message<\/a> if the roll number is not valid as per the conditions applied in the Ajax Callback process.<\/p>\n<p><a href=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/oracle-apex-ajax-callback-js.png\"><img decoding=\"async\" class=\"aligncenter size-large wp-image-4780\" src=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/oracle-apex-ajax-callback-js-1024x388.png\" alt=\"Oracle Apex: calling Ajax Callback process using JavaScript.\" width=\"1024\" height=\"388\" srcset=\"https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/oracle-apex-ajax-callback-js-1024x388.png 1024w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/oracle-apex-ajax-callback-js-300x114.png 300w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/oracle-apex-ajax-callback-js-600x227.png 600w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/oracle-apex-ajax-callback-js-768x291.png 768w, https:\/\/vinish.dev\/wp-content\/uploads\/2020\/04\/oracle-apex-ajax-callback-js.png 1452w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In my previous tutorial, I have given an example to validate a page item using the PL\/SQL function returning error text. Which executes on page submit, but if you want to warn the user for an error without the page submit, then you can use the Ajax Callback process and call it using the JavaScript. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15593,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-4779","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apex"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Oracle Apex Validation Without Submit Using JavaScript and Ajax Callback &#8226; Vinish.Dev<\/title>\n<meta name=\"description\" content=\"Learn how to validate an item in Oracle Apex without page submit using the Ajax callback process and JavaScript code.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vinish.dev\/oracle-apex-validation-without-submit-using-javascript-and-ajax-callback\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle Apex Validation Without Submit Using JavaScript and Ajax Callback &#8226; 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