Interactive Form Buttons
Learn to build interactive forms with event handling, dynamic buttons, validation, and feedback.
Forms and their elements can be accessed and manipulated using various DOM methods.
Selecting form elements using DOM methods
We can use standard DOM methods to select form elements like text fields, checkboxes, and buttons.
const form = document.querySelector('form');const textInput = document.querySelector('input[type="text"]');const submitButton = document.querySelector('button[type="submit"]');console.log(form, textInput, submitButton);
The above code uses CSS selectors to select the form element, a text input field, and a submit button.
Manipulating form values
Manipulating form values allows dynamic control over user input and form behavior.
Accessing values and properties
We can access specific properties of form elements to interact with them programmatically.
console.log(textInput.value); // Logs the current value of the text inputssubmitButton.disabled = true; // Disables the submit button
The value property retrieves the content of an input field and the disabled property can enable or disable a button dynamically.
Setting values
We can set values for text fields, checkboxes, and radio buttons as shown below:
// Setting valuestextInput.value = 'Hello, World!';// Accessing checkboxesconst checkbox = document.querySelector('input[type="checkbox"]');checkbox.checked = true; // Sets the checkbox to checked
The value property sets or retrieves the value of text fields, and the checked property toggles the state of checkboxes or radio buttons. ...