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Prevent the default behavior with jQuery event handler

Written byPhuoc Nguyen
DOM, JavaScript
23 Feb, 2021
If you're using jQuery to manage the events, then you're able to use `return false` within the event handler:
$(element).on('click', function (e) {
return false;
Before returning the value of `false`, the handler would do something else. The problem is that if there's any runtime error occurring in the handler, we will not reach the `return false` statement at the end.
In that case, the default behavior will be taken:
$(element).on('click', function (e) {
// Do something here, but if there's error at runtime
// ...
return false;
We can avoid this situation by using the `preventDefault` method before performing any custom handler:
$(element).on('click', function (e) {

// Do something here
// The default behavior is prevented regardless errors at runtime
// ...

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Phước Nguyễn