如果条件为真或跳过所有其他条件

Question

xyz.html

<p id = x ngClick = close($event)></p>
<p id = y ngClick = close($event)></p>
<p id = z ngClick = close($event)></p>
<h1 id = a ngClick = close()></h1>

xyz.js

function close(event)
if (event.target.id === x){
....
}else if(event.target.id === y){
....
}else if(event.target.id === z){
.....
}

This function is to close current window and check for the event but when I'm not passing this event in other close methods(h1 tag) I'm getting the event is undefined error.

Answer 1

The error is correct. You need first check if event is defined, because you can't directly access target property if event is undefined.

function close(event)
   if(event){
    if (event.target.id === x){
    ....
    }else if(event.target.id === y){
    ....
    }else if(event.target.id === z){
    .....
    }
    }else{
           //H1 click condition
      }
}

Answer 2

 function close(event){
     if(event===undefined){

     //H1 got clicked
       return;
     }

     if (event.target.id === x){
     ....
     }else if(event.target.id === y){
     ....
     }else if(event.target.id === z){
     .....
     }
   }

Answer 3

Try this:

$scope.close = function(event) {
  if (!event) return;

  switch (event.target.id) {
    case "x":
      ...
      break;
    case "y":
      ...
      break;
    case "z":
      ...
      break;
    default:
      ...
      break;
  }
}