cmd + alt + up or down
cmd + dfunction isExistAttr(key) {
  if (this.$attrs["confirm"] === "" || this.$attrs["confirm"] === true || this.$attrs["confirm"] === "true") {
  }
}
function isExistAttr(key) {
  const attr = this.$attrs[key];
  if (attr === "" || attr === true || attr === "true") {
    this.customClass = "confirm";
  }
}
alt(option) + click
alt(option) + shift + i
alt(option) + shift + drag
cmd + g