Applescript的Javascript变量

我正在使用以下代码：

set javaScriptVar to "var body = document.body, html = document.documentElement; var height = Math.max(body.scrollHeight, body.offsetHeight, html.scrollHeight, html.offsetHeight); return height"

set myJSvar to do JavaScript javaScriptVar in document 1

display alert myJSvar

我得到的值是：

msng

这有什么问题吗？

试试：

set javaScriptVar to "var body = document.body; html = document.documentElement; var height = Math.max(body.scrollHeight, body.offsetHeight, html.scrollHeight, html.offsetHeight); height;"

tell application "Safari" to set myJSvar to do JavaScript javaScriptVar in document 1

尝试：