Question

js 赋值问题

请问下该图片中的这一句,
var FCKSelection = FCK.Selection ={} 是什么意思??为什么连续用了=号

Answer 1

先把{} 赋值给FCK.Selection
再把FCK.Selection 赋给FCKSelection
效果就相当于
FCK.Selection ={};
var FCKSelection = FCK.Selection;

Answer 2

把FCK.Selection ={}的比较结果（真或假）赋给FCKSelection。
就像var FCKSelection =(FCK.Selection ={})