常见错误检查

 1 function errorCheck() {
 2         window.addEventListener(‘error‘,function(error){
 3                 if(error.filename){return false;}else{
 4                     console.log(error.target+"资源加载失败"+":");
 5                     console.log(error.target);}
 6             },true);
 7         window.onerror = function(message, source, lineno, colno, error) {
 8                 console.log("程序终止:"+message+" at "+lineno+":"+colno);
 9                 return true;
10             }
11         window.addEventListener(‘unhandledrejection‘,function(event){
12             event && event.preventDefault();
13             console.log("数据接口请求失败");
14         },true);       
15     }