measure width in px chrome extension
var fromX, fromY;
var svg = document.createElementNS ('http://www.w3.org/2000/svg',"svg");
svg.setAttribute("style", "position: absolute; top:0;left:0;height: " + document.body.clientHeight + "px;width: 100%");
var line = document.createElementNS('http://www.w3.org/2000/svg','line');
line.setAttribute("style", "stroke-width: 4; stroke: red");
svg.appendChild(line);
document.body.appendChild(svg);
document.body.addEventListener("mousedown", function (e) {
fromX = e.pageX;
fromY = e.pageY;
});
document.body.addEventListener("mousemove", function (e) {
if (fromX === undefined) {
return;
}
line.setAttribute("x1", fromX);
line.setAttribute("x2", e.pageX);
line.setAttribute("y1", fromY);
line.setAttribute("y2", e.pageY);
console.log(
[fromX, fromY], " to ", [e.pageX, e.pageY], "Distance:",
Math.sqrt(Math.pow(fromX - e.pageX, 2) + Math.pow(fromY - e.pageY, 2))
);
});
document.body.addEventListener("mouseup", function (e) {
fromX = undefined;
fromY = undefined;
});
Are there any code examples left?
New code examples in category Javascript
-
Javascript 2023-04-21 22:52:36
-
Javascript 2022-03-27 22:25:20 javascript download string as file
-
Javascript 2022-03-27 21:40:22 sort numbers in array javascript
-
Javascript 2022-03-27 21:20:04 compare two arrays and return the difference javascript
-
Javascript 2022-03-27 21:15:02 javascript regex french phone number
-
Javascript 2022-03-27 21:05:03 cypress custom error message
-
Javascript 2022-03-27 21:00:05 create element javascript with id
-
Javascript 2022-03-27 20:40:57 feather icons react
-
Javascript 2022-03-27 20:20:01 how to make graphql request in axios
-
Javascript 2022-03-27 20:15:07 bootstrap validator password and confirm password