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Try catch statement:- genius student

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  • The try...catch statement is very import.
  • If any errors occur inside the try block while running time, error will throw to the catch block.
  • The finally block is optional and this will works after execute the try block or catch block.
  • The catch block contains statements which is useful when an exception is thrown from the try block.
  • Code:-

    2. <!DOCTYPE html> 
    3. <html> 
    4.  
    5. <head> 
    6.  <meta name="viewport" content="width=device-width, initial-scale=1"> 
    7. </head> 
    8.  
    9. <body> 
    10.  
    11.  <h1>Try Catch and Finally</h1> 
    12.  
    13.  <input type="button" value="Find Error" onclick="fun_err();"> 
    14.  
    15.  <script> 
    16.   function fun_err() 
    17.   { 
    18.    try 
    19.    { 
    20.     alert(i); // i is not defined so error occured 
    21.    } 
    22.    //if any error occur in try block catch will execute 
    23.    catch (err) 
    24.    { 
    25.     alert("Error is : " + err.message); 
    26.    } 
    27.    //finally is optional and it should execute after try and catch executed 
    28.    finally 
    29.    { 
    30.     alert("Finally Executed"); 
    31.  
    32.    } 
    33.   } 
    34.  </script> 
    35.  
    36. </body> 
    37.  
    38. </html>
    Try catch statement:- genius student Try catch statement:- genius student Reviewed by Network security on November 04, 2019 Rating: 5

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