And you don’t necessarily need .length or see if it’s >0 since an empty string evaluates to false anyway but if you’d like to for readability purposes: If you’re sure it will always operate on a textfield element then you can just use this.value. Also you should take note that $(‘input:text’) grabs multiple elements, specify … Read more
Apache Commons is generally known as a solid project. Keep in mind, though, you’ll still have to send a verification email to the address if you want to ensure it’s a real email, and that the owner wants it used on your site. EDIT: There was a bug where it was too restrictive on domain, … Read more
You can try the following: And while validating with schema, you can use the convert:true option as: Alternatively, you can directly provide additional preferences to convert the Joi validated object in the schema: Here is a link to working example: https://repl.it/repls/HarmfulEvenPhases
It drops the students table. The original code in the school’s program probably looks something like This is the naive way to add text input into a query, and is very bad, as you will see. After the values from the first name, middle name textbox FNMName.Text (which is Robert’); DROP TABLE STUDENTS; –) and the last name textbox LName.Text (let’s … Read more
I need to validate just one field (called ‘Instance’) to accept lowercase ASCII letters and numbers only, the first character also has to be a letter not a number. It will accept uppercase characters but we will need it to lowercase them on input. So if someone uses the instance name McDonalds it will be … Read more
You could use the submitHandler option. Basically put the $.ajax call inside this handler, i.e. invert it with the validation setup logic. The jQuery.validate plugin will invoke the submit handler if the validation has passed.
The shortest valid email address may consist of only two parts: name and domain. name@domain Since both the name and domain may have the length of 1 character, the minimal total length resolves to 3 characters.
Brad Wilson has a couple great articles on unobtrusive validation and unobtrusive ajax.It is also shown very nicely in this Pluralsight video in the section on ” AJAX and JavaScript”. Basically, it is simply Javascript validation that doesn’t pollute your source code with its own validation code. This is done by making use of data- attributes in HTML.
You can use string.indexOf(‘a’). If the char a is present in string : it returns the the index of the first occurrence of the character in the character sequence represented by this object, or -1 if the character does not occur.
Possibly it’s because: Is between your closing head tag and opening body tag. I.e. lines 81-87