How to solve the offsetX compatibility problem with JavaScript
This article mainly shows you "JavaScript how to solve offsetX compatibility problems", the content is easy to understand, clear, hope to help you solve doubts, the following let the editor lead you to study and learn "JavaScript how to solve offsetX compatibility problems" this article.
Resolve offsetX compatibility issues / / offsetX/Y is not supported for Firefox
Function getOffset (e) {
Var target = e.target, / / the target object currently triggered
EventCoord
PageCoord
OffsetCoord
/ / calculate the distance from the current trigger element to the document
PageCoord = getPageCoord (target)
/ / calculate the distance from the cursor to the document
EventCoord = {
X: window.pageXOffset + e.clientX
Y: window.pageYOffset + e.clientY
}
/ / subtract to get the coordinates of the cursor to the first positioned parent element
OffsetCoord = {
X: eventCoord.X-pageCoord.X
Y: eventCoord.Y-pageCoord.Y
}
Return offsetCoord
}
Function getPageCoord (element) {
Var coord = {X: 0, Y: 0}
/ / calculate from the current trigger element to the root node
/ / Sum of offsetLeft or offsetTop values of offsetParent elements at all levels
While (element) {
Coord.X + = element.offsetLeft
Coord.Y + = element.offsetTop
Element = element.offsetParent
}
Return coord
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