DOMException: Failed to execute 'open' on 'XMLHttpRequest': Invalid URL

在用ajax发起请求时，少写了http：//

如：http://192.*.*.*:8080     写成了192.*.*.*.8080   就会报这错

 

{
  "readyState": 0,
  "status": 0,
  "statusText": "SyntaxError: Failed to execute 'open' on 'XMLHttpRequest': Invalid URL"
}