javascript try catch example function [ javascript ] - KruXoR

javascript

javascript try catch example function

Posted in javascript

9111

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

9111

2:01 am, October 29, 2021

External Link for javascript try catch example function

View Statistics

This Week

298

This Month

1343

This Year

2377

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 22

javascript https 79

javascript another 93

javascript with 79

javascript prevent 93

javascript Opener 78

javascript when 89

javascript web 99

javascript possible 95

javascript more 88

javascript messages 78

javascript long 81

javascript even 84

javascript continue 95

javascript calls 79

javascript after 115

javascript Web 84

javascript Block 78

javascript display 84

javascript stop 92

javascript Browser 86

javascript browser 88

javascript should 77

javascript open 104

javascript opener 92

javascript error 87

javascript page 148

javascript still 128

javascript console 83

javascript just 108

javascript Play 80

javascript Basic 99

javascript Check 76

javascript basic 98

javascript good 123

javascript JavaScript 68

javascript from 91

javascript function 89

javascript margin 105

javascript Another 102

javascript state 140

javascript href 109

javascript ending 100

javascript Function 95

javascript java 95

javascript return 102

javascript other 101

javascript the 86

javascript pre 111

javascript style 81

javascript Other 89

javascript play 91

javascript your 87

javascript Errors 94

javascript Display 90

javascript Console 93

javascript exist 102

javascript running 111

javascript bis 80

javascript here 94

javascript without 91

javascript target 113

javascript errors 84

javascript check 82

javascript message 90

javascript this 114

javascript code 80

javascript Javascript 83

javascript console log 74

javascript that 94

javascript javascript 122

javascript block 84

javascript nonexistentfunction is not defined 91

javascript test 112

javascript nonExistentFunction is not defined 89

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...