JS得到文本框的坐标

Question

document.getElementById(obj).offsetLeft
.............................offsetTop

Answer 1

document.getElementById(obj).clientX
............................clientY

Answer 2

X = 文本框的left+width
y = 文本框的 top+height

Answer 3

document.getElementById(obj).offsetLeft + 文本框宽
.............................offsetTop +文本框高

Answer 4

document.getElementById(obj).offsetLeft 
.............................offsetTop

Answer 5

document.getElementById(obj).display.left=  px
document.getElementById(obj).display.top=  px