Email and password validation in javascript

Learn how to create a password validation form with CSS and JavaScript.

Password Validation

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Create A Password Validation Form

Step 1) Add HTML:

Example

Note: We use the pattern attribute (with a regular expression) inside the password field to set a restriction for submitting the form: it must contain 8 or more characters that are of at least one number, and one uppercase and lowercase letter.

Step 2) Add CSS:

Style the input fields and the message box:

Example

/* Style all input fields */
input {
  width: 100%;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
  margin-top: 6px;
  margin-bottom: 16px;
}

/* Style the submit button */
input[type=submit] {
  background-color: #04AA6D;
  color: white;
}

/* Style the container for inputs */
.container {
  background-color: #f1f1f1;
  padding: 20px;
}

/* The message box is shown when the user clicks on the password field */
#message {
  display:none;
  background: #f1f1f1;
  color: #000;
  position: relative;
  padding: 20px;
  margin-top: 10px;
}

#message p {
  padding: 10px 35px;
  font-size: 18px;
}

/* Add a green text color and a checkmark when the requirements are right */
.valid {
  color: green;
}

.valid:before {
  position: relative;
  left: -35px;
  content: "✔";
}

/* Add a red text color and an "x" icon when the requirements are wrong */
.invalid {
  color: red;
}

.invalid:before {
  position: relative;
  left: -35px;
  content: "✖";
}

Step 3) Add JavaScript:

Example