throw errors in javascript code example

Example 1: js throw error

throw new Error('Whoops!')

Example 2: javascript how to raise the error

if (..condition..) {
    throw 'Error message';
  }

Example 3: javascript try

var someNumber = 1;
try {
  someNumber.replace("-",""); //You can't replace a int
} catch(err) {
 console.log(err);
}

Example 4: javascript try catch

<html>  
<head>Exception Handling</head>  
<body>  
<script>  
try {  
   throw new Error('This is the throw keyword'); //user-defined throw statement.  
}  
catch (e) {  
  document.write(e.message); // This will generate an error message  
}  
</script>  
</body>  
</html>

Example 5: javascript test throw error

expect( function(){ parser.parse(raw); } ).toThrow(new Error("Parsing is not possible"));

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