(JS) catch errors (exceptions)

1. Use try …cath

try{
    
	//todo
}catch(ex) {
    
	throw new Error(ex);
}finally {
    
	//todo
}

2. Use window Capture

	window.onerror = function(message, source, linenum, colnum, error) {
    
	//todo
	//  For cross domain JS, There will be no detailed error reporting information 
	//  For compressed JS, Need to cooperate with sourceMap Decompressed code line found 
}