inputElementselectionStart

inputElementselectionStart is a read-only property of HTML input elements that returns the index of the beginning of the currently selected text within the input element's value. If no text is selected, it returns the current cursor position. This property is part of the selection API and is available for elements like <input type="text">, <input type="password">, <input type="search">, <input type="tel">, <input type="url">, and <textarea>.

The value returned by inputElementselectionStart is an integer representing the zero-based index of the character where the selection begins. For example, if the input value is "Hello World" and the user selects the text "World", selectionStart would be 6 (the index of 'W'). If the cursor is positioned after the 'o' in "Hello", selectionStart would be 5.

This property is useful for JavaScript developers who need to manipulate text within input fields, such as implementing custom selection highlighting, text replacement, or character counting. It can be used in conjunction with inputElementselectionEnd to determine the entire range of selected text. When dealing with user input, checking selectionStart can help understand the user's interaction with the text field.