Javascript code for validating checkbox paglakas ng dating kaalaman

posted by | Leave a comment

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.

The problem is that, to have the data submitted in a 'nice' format to the server, the function returns an array containing all the selected checkbox values. In more complicated forms you will want to set conditions on the form that combine multiple elements.In such situations you should validate check box-selections before submitting the form.Use following multiple check box selection example to study the in Java Script. First you have to select at least 3 mobile phone manufactures from first check box group.Very handy, everything else I found was rubbish but this gave me exactly what I wanted with minor modification (removed ' ' character) - needed to alert user if 'username' contained a space /anywhere/ in the field. tags: Javascript field validation no spaces alert Hi - Is it possible to have a checkbox, that has a default of checked, so that the user HAS to enter info into the textarea.But if the user unchecks the box, the user DOESNT have to enter info in textarea.

Leave a Reply

Free chat raw sex