![]() Thus we can fetch important sections or cursor positions more intuitively through this property. It means if the viewport has a larger length than the viewport that is screened on, the property will count for the whole dimension of the entire page. But unlike those properties, pageX/Y considers the whole page’s dimension while calculating values. Similar to screenX/Y and clientX/Y, pageX/Y is also a read-only property. Use pageX/Y Property to Get Cursor Positional Value So, we can do a similar task for the x-axis value. And when scrolled down a little, the value remained 0. So, in the portion where we checked the page’s top value(y), it resulted in 0. Let screenLog = document.querySelector( '#screen-log') ĭocument.addEventListener( 'mousemove', logKey) The screenX/Y is a read-only property, and it follows the reference point as the global or the whole screen coordinate. ![]() Here, the cursor position is for the default cursor thus, we will use the onmousemove attribute to track the positions. The coordinate value strictly follows a certain referral point to show the position. In the case of the screenX/Y property, we calculate the position referred by a reference point. However, I need to know how many pixels it is from the element all the way to the corner of the screen. Use screenX/Y Properties to Get Cursor Position It's easy to get the size and position of the window (screenX, screenY) and it's easy (with jQuery) to get the offset of the element ( ('element').offset ().left). It is the read-only section of these properties. You can try and see the same outcome as the selectionStart property. The selectionEnd would perform similarly here, so we didn’t add any preview. ![]() Var ctl = document.getElementById( 'Javascript_example') ĭocument.getElementById( 'vals').innerText = startPos And so, we only get the position of the horizontal part, and the calculation is dependent on the character counts. To be precise, the cursor is the text type cursor on which these properties work. It prints the position of the string character that the cursor has passed. When talking about the read-only convention, the selectionStart and selectionEnd will perform similarly. In the instance demonstrated here, we will only showcase the read-only method for the selectionStart. You can have a more detailed aspect in this particular documentation. Playing with strings is limited as they only work on some particular attributes.įor example, input:text, input:textarea, input:password, and etc. screenX/Y: the coordinates of the mouse position relative to the screen PageX/Y: Relative to the edge of the document (including the scroll bar distance) ClientX/Y: relative to the current page and does not include the scroll bar distance OffsetX/Y: Relative to the current element (block or inline block), no border is included except safari. There is also the getSelectionRange property that explicitly takes the selectionStart and selectionEnd values and figures out a specific range of sub-string. You can either define them with a positional value or take the default value, which performs the read operation. The selectionStart and selectionEnd properties are read/write properties. But, first, let’s jump into the main part! Use selectionStart and selectionEnd Property to Get Cursor Position We will also consider the working principle for the screenX/Y, clientX/Y, and pageX/Y, where three properties are based on coordinate systems. The following section will demonstrate examples of the selectionStart and selectionEnd properties. The pageX property returns the document relative X coordinate of the mouse pointer when a mouse event occurs. In this case, the reference point can vary and thus results in different values respective to different frames. Other properties also play a vital role in extracting the positional values based on coordinate marks. Note: An alias of screenX was implemented across modern browsers in more recent times Window.screenLeft. ![]() JavaScript was incorporated with the fundamental positional property selectionStart and selectionEnd, where we can only retrieve the positional value from a string literal’s 0th index. The Window.screenX read-only property returns the horizontal distance, in CSS pixels, of the left border of the user's browser viewport to the left side of the screen. Use pageX/Y Property to Get Cursor Positional Value.Use screenX/Y Properties to Get Cursor Position.Use selectionStart and selectionEnd Property to Get Cursor Position.Hope this can be useful for others: function fixTouch (touch) else if (y < (touch.pageY - winPageY) || x < (touch. I've found a way to detect the bugs and calculate the correct values. I have seen this bug in iOS4 and a different bug in Android 4.0. It's a bug in older versions of webkit that occur when the page is scrolled.
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