javascript try catch example function [ javascript ] - KruXoR

javascript

javascript try catch example function

Posted in javascript

9416

2:01 am, October 29, 2021

javascript try catch example function

try catch is a good way to stop errors breaking your javascript.

here is the example from the firefox mozilla with a basic try catch logging the error to your console, rather than just breaking all the javascript on your page.

then after this try catch i will add another console log to see if the code is still functioning on the rest of the scripts.

so you can see if you check your console log that the try catch still throws an error but then the scripts continue to run on the page, so if i called the non existant function without the try catch it would not run the console log below that error message.

So if possible all functions should be run in this way to prevent script breaking calls.

Here you can see the console output showing the console log after the error.

When running this test in brave i get the error (which is expected):

(index):378 ReferenceError: nonExistentFunction is not defined
at (index):376

if i run this without the catch it will not run any further code on the page and just return an error.

Here is the console after just calling the function with no try and catch statement, and it no longer runs any code after this error.

Javascript

try {
  nonExistentFunction();
} catch (error) {
  console.error(error);
  // expected output: ReferenceError: nonExistentFunction is not defined
  // Note - error messages will vary depending on browser
}
console.log('more tests... ');

// and this will break all the js on the page with an error. 
nonExistentFunction();

console.log('test after breaking function');

Posted in javascript

9416

2:01 am, October 29, 2021

External Link for javascript try catch example function

View Statistics

This Week

332

This Month

1540

This Year

2682

No Items Found.

Add Comment

Other Items in javascript

get current year in javascript find a text string and replace it in javascript check if an item id exists in javascript Twitter Post Fetcher v18.0.4 - javascript twitter feed fetcher Are you sure you want to navigate away from this page? #JavaScript warning floating message box on bottom right of screen with close button share to twitter javascript button function open a new window share to linked in current url button with javascript Get current URL and add a share to facebook share button with it encode url with javascript Twitter Post Fetcher Script Javascript Objects Notes javascript add class to element update value of element using javascript javascript attach a click event to an id not using jquery console dir usage how to write a javascript string over multiple lines best way to write html into an existing page javascript Uncaught TypeError: Cannot set properties of null (setting 'onclick') check url hash using javascript submit form with javascript Converting PHP to Javascript for State Extraction by numeric value Australian State Names get the value from a textarea element javascript get content from element convert characters to entities using javascript replace Auto Create HTML Code Snippets loop to arr.length or array length get tomorrows date with javascript get yesterdays date with javascript add new random image with button Create Strings using Template Literals Darkmode JS - Add darkmode to your site with one script Use destructuring assignment within the argument to the function half to send only max and min inside the function. Using Destructuring and the Rest Parameter to Reassign Array Elements Use destructuring assignment to swap the values of a and b Sweet Alert 2 Methods and Examples How to Assign the Value of One Variable to Another in Javascript Slick Slider Carousel with Custom Next and Prev Buttons Console Tips and Tricks javascript random string to put on url for cache javascript try catch example function load json data url or api with javascript log the console log output to a div javascript basic test array and loop how to join an array in javascript using the join method show the current date in javascript get element by id and hide it get element by id with javascript set a cookie on click and then check if the cookie is set and dont show that message again console table rather than console log for javascript objects and arrays

Related Search Terms

javascript http 24

javascript https 82

javascript another 94

javascript with 82

javascript prevent 96

javascript Opener 78

javascript when 91

javascript web 103

javascript possible 98

javascript more 90

javascript messages 82

javascript long 85

javascript even 87

javascript continue 98

javascript calls 81

javascript after 117

javascript Web 89

javascript Block 80

javascript display 88

javascript stop 95

javascript Browser 89

javascript browser 92

javascript should 80

javascript open 106

javascript opener 95

javascript error 88

javascript page 156

javascript still 133

javascript console 87

javascript just 109

javascript Play 82

javascript Basic 100

javascript Check 80

javascript basic 99

javascript good 124

javascript JavaScript 70

javascript from 94

javascript function 90

javascript margin 108

javascript Another 107

javascript state 142

javascript href 111

javascript ending 102

javascript Function 96

javascript java 97

javascript return 104

javascript other 105

javascript the 88

javascript pre 113

javascript style 83

javascript Other 92

javascript play 93

javascript your 87

javascript Errors 95

javascript Display 93

javascript Console 99

javascript exist 105

javascript running 115

javascript bis 84

javascript here 96

javascript without 93

javascript target 120

javascript errors 84

javascript check 86

javascript message 94

javascript this 117

javascript code 81

javascript Javascript 85

javascript console log 78

javascript that 96

javascript javascript 123

javascript block 88

javascript nonexistentfunction is not defined 94

javascript test 114

javascript nonExistentFunction is not defined 94

Welcome

This is my test area for webdev. I keep a collection of code here, mostly for my reference. Also if i find a good link, i usually add it here and then forget about it. more...