Menu
I was wondering whether it is possible to assign a value to an HTML text box and protect it.
What I mean is make it´s content unmodifiable, so that when the form gets submitted im "sure" it was this value which was submitted.
BTW I realize the easier way would be not to "listen" fot this input and just assign it but it would come in handy to be able to do what´s stated above.
I hope the question is clear enough, please ask for any needed clarification.
Thanks in advance!
EDIT: I was definitely not clear enough but I tried to express that i should hold the value after submitted (not modifiable in client side)
995
The HTML <input> tag is used to get user input in HTML. To give a limit to the input field, use the min and max attributes, which is to specify a maximum and minimum value for an input field respectively. To limit the number of characters, use the maxlength attribute.
The readonly attribute makes a form control non-editable (or “read only”). A read-only field can't be modified, but, unlike disabled , you can tab into it, highlight it, and copy its contents. Setting the value to null does not remove the effects of the attribute. Instead use removeAttribute('readonly') .
The standard solution to restrict a user to enter only numeric values is to use <input> elements of type number. It has built-in validation to reject non-numerical values. This is demonstrated below: HTML.
The readonly attribute is a boolean attribute. When present, it specifies that an input field is read-only. A read-only input field cannot be modified (however, a user can tab to it, highlight it, and copy the text from it).
No, it's not. You should never trust user input, which includes form submissions.
The other answers tell you how to mark the field as read-only. This is useful if you want to display a particular value, while showing that it's not intended to edited.
However, it can still be modified with Firebug, DOM Inspector, etc. Or, they can just submit a HTTP request without using the browser at all.
I would recommend storing the value in a session instead.
127
Set the readonly property of the input element:
<input type="text" readonly="readonly" />
This will prevent any modification (except if the user edits with a DOM Inspector). Always validate input on the server. If you do not want any changes made, don't allow the user to edit it.
http://www.w3schools.com/tags/att_input_readonly.asp
20
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
