1、使用iframe

let ifr = document.createElement('iframe');
ifr.src = 'test123://';
ifr.style.display = 'none';
document.body.appendChild(ifr);
this.downloadTimer = setTimeout(()=>{
    document.body.removeChild(ifr)
    this.clearTimer()
},3000);

2、直接window.location

window.location.href = 'test123://'

3、模拟<a>标签点击

let aLink = document.createElement('a')
aLink.href = 'test123://'
document.body.appendChild(aLink)
aLink.click()

4、ios环境下唤起已上架的app

先判断当前环境为ios，然后使用itms-appss://itunes.apple.com/app/apple-store/xxxxxx