从控制台将变量保存到本地

// 自定义从控制台将变量保存到本地的函数
;(function(console) {
  console.save = function(data, filename) {
    if (!data) {
      console.error("Console.save: No data")
      return
    }
    if (!filename) filename = "console.json"
    if (typeof data === "object") {
      data = JSON.stringify(data, undefined, 4)
    }
    var blob = new Blob([data], { type: "text/json" }),
      e = document.createEvent("MouseEvents"),
      a = document.createElement("a")
    a.download = filename
    a.href = window.URL.createObjectURL(blob)
    a.dataset.downloadurl = ["text/json", a.download, a.href].join(":")
    e.initMouseEvent("click",true,false,window,0,0,0,0,0,false,false,false,false,0,null,)
    a.dispatchEvent(e)
  }
})(console)
const msg = 'hello world'
console.save(msg, 'msg.txt')

tips:
如果要将变量作为对象key要加[]

let a = 'hhh'
let b = 'jjj'
c = {a: b}  // {a: 'jjj'}
c = {[a]: b} // {hhh:'jjj'}

JS用正则查找字符串的方法：

1. re.exec(str)
2. str.match(re)

tips:
python通过正则获取字符串

patten = re.compile(r'[^/]*\.jpg')
image_name = patten.findall(image_url)[0]