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showing results for - "how to check if exists in javascript"
Noha
31 Apr 2017
1if (typeof myVar !== 'undefined') {
2    // myVar is defined
3}
source
Ana Paula
21 Jan 2021
1if (typeof(elem) !== 'undefined') {
2
source
Emely
28 Nov 2019
1if (elem != null) {
2
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