Validating select box
When the form is submitted - either by hitting Enter or clicking on the Submit button - the (the 'value' of the field called 'input' belonging to the form). In a real-life situation you will most likely have more fields to check, and more complicated conditions, but the principle remains the same.Other form values are available using a similar syntax, although this becomes more complicated if you're using SELECT lists, checkboxes or radio buttons (see below for examples). All you need to do is extend the command is encountered, execution of the function is halted.download the selectoptionfield_file from below link, extract files and include them in view, controller and model directory of your codeigniter framework as shown in the Read file.When you submit a form to a CGI program that resides on the server, it is usually programmed to do its own check for errors.The value of a text input box (or a textarea or password input) is available using the syntax that tells you which option has been selected.The illustration below shows this relationship: Note that the 'I' in selected Index needs to be capitalised - Java Script functions and variables are always case-sensitive. Read more about the humble checkbox in our HTML5 Checkbox Validation article.I tested your first piece of code on a form and it does not work at all.
It can prevent people from leaving fields blank, from entering too little or too much or from using invalid characters.You'll see that the all validation scripts presented on this and subsequent pages adhere to the same basic format.Most modern browsers now support HTML5 Form Validation making it possible to validate form elements without (or before) any Java Script is triggered.In our example, we have created a select option field in form with fetched values from database using for each loop and set validation rules for fields.
watch our live demo or copy paste our codes as per directed in read me file.I've coded a working form, all checks are great but for some reason the hardest part is trying to stop form submission before validation.