Created
January 15, 2020 22:38
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const nameField = document.querySelector('#name'); | |
nameField.addEventListener('input', function(event) { | |
const value = event.target.value; | |
const isValid = (nameField.validity.valid && value.length === 10); | |
debugger | |
if(isValid) { | |
nameField.style.borderColor = 'black'; | |
} else { | |
nameField.style.borderColor = 'red'; | |
} | |
}) | |
const numField = document.querySelector('#num'); | |
const messageBox = document.querySelector('#messagebox'); | |
numField.addEventListener('input', function(event) { | |
const value = event.target.value | |
const isValid = (numField.validity.valid); | |
if(isValid) { | |
messageBox.style.display = 'none'; | |
messageBox.textContent = ''; | |
} else { | |
messageBox.style.display = 'block'; | |
let errorMessage = ''; | |
if(numField.validity.rangeOverflow) { | |
errorMessage += 'The number is too long. '; | |
} | |
if(numField.validity.rangeUnderflow) { | |
errorMessage += 'The number is too short. '; | |
} | |
if(numField.validity.stepMismatch) { | |
errorMessage += 'The number is not allowed. '; | |
} | |
if(numField.validity.valueMissing) { | |
errorMessage += 'The number field is required'; | |
} | |
messageBox.textContent = errorMessage; | |
messageBox.style.color = 'red'; | |
} | |
}) |
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