Comments (2)
+1
from jquery-scrollspy.
Did anyone figure this out?
UPD: I didn't notice this at first, but turns out, scrollSpy accepts functions as "min" or "max" values. So this is what I ended up doing in the end:
MyApp: {
mySection: $('#my-section'),
scrollSpy: {
init: function() {
this.mySectionMinValue = 0;
this.mySectionMaxValue = 0;
this._initMySection();
$(document).on('heightChange', $.proxy(this._resetHeights, this));
},
_initMySection: function() {
MyApp.mySection.scrollspy({
min: MyApp.scrollSpy.getMySectionMinValue,
max: MyApp.scrollSpy.getMySectionMaxValue,
onEnter: function() {
// do stuff
},
onLeave: function() {
// undo stuff
}
});
return this;
},
getMySectionMinValue: function() {
if (MyApp.scrollSpy.MySectionMinValue === 0) {
MyApp.scrollSpy.MySectionMinValue = MyApp.MySection.offset().top;
}
return MyApp.scrollSpy.MySectionMinValue;
},
getMySectionMaxValue: function() {
if (MyApp.scrollSpy.MySectionMaxValue === 0) {
MyApp.scrollSpy.MySectionMaxValue = MyApp.MySection.offset().top + MyApp.MySection.height();
}
return MyApp.scrollSpy.MySectionMaxValue;
},
_resetHeights: function() {
this.mySectionMinValue = 0;
this.mySectionMaxValue = 0;
}
}
}
Then, when I change the height of the document, I simply trigger the "heightChange" event. So in the end, scrollSpy always has the latest min/max values and all is good :)
from jquery-scrollspy.
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from jquery-scrollspy.