check row empty array javascript

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Yannic
04 Oct 2019
1if (typeof array !== 'undefined' && array.length === 0) {
2    // the array is defined and has no elements
3}
4
source
Tommaso
23 Feb 2017
1if (array === undefined || array.length == 0) {
2    // array empty or does not exist
3}
4
source
Héloïse
05 Jan 2020
1if(array && array.length){   
2   // not empty 
3} else {
4   // empty
5}
source
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