javascript - 没有定义cursorX(..)

我想从jQuery BlockUI插件生成的模态中获取cursorX坐标。
当我尝试使用下面的代码这样做时，它给出“ cursorX is not defined（..）”错误。

document.onmousemove = function(e){
        cursorX = e.pageX;
        cursorY = e.pageY;console.log('dsahg');
    }
cursorX;

最佳答案

是的，它没有定义。您需要使用var进行定义

console.log(cursorX);//see this its a undefined .its not defined by anything before

var cursorX=""; // default value is empty
var cursorY ="" // default value is empty
document.onmousemove = function(e){
        cursorX = e.pageX;
        cursorY = e.pageY;console.log(cursorX);
    }
console.log(cursorX); //its a defined one .but pass the default empty value.Beacuse its show with window load .not after the mouse move