function mouseMove() {
if (move){
if(window.event.x - clickleft<200)
dragObj.style.left=200;
else
if(window.event.x - clickleft>600)
dragObj.style.left=800;
else
dragObj.style.left=window.event.x - clickleft;
if(window.event.y - clicktop<200)
dragObj.style.top=200;
else
if(window.event.y - clicktop>400)
dragObj.style.top=400;
else
dragObj.style.top = window.event.y - clicktop;
}
}注意if-else
if (move){
if(window.event.x - clickleft<200)
dragObj.style.left=200;
else
if(window.event.x - clickleft>600)
dragObj.style.left=800;
else
dragObj.style.left=window.event.x - clickleft;
if(window.event.y - clicktop<200)
dragObj.style.top=200;
else
if(window.event.y - clicktop>400)
dragObj.style.top=400;
else
dragObj.style.top = window.event.y - clicktop;
}
}注意if-else
解决方案 »
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