jquery - Get concatenate string of multiple value variable in Javascript -


i've list of div

<div data-attr="sel" data-num="1"></div> <div data-attr="notsel" data-num="2"></div> <div data-attr="sel" data-num="3"></div>

i'm tryng string div data-attr="sel" set.

function si_movetasks() {     var getselected = document.queryselector('[data-attr~="sel"]');     var selectednums = getselected.dataset.num;     alert(selectednums); }

now (1), how can concatenate string (1,3)? support.

demo -> http://jsfiddle.net/0d54ethw/

use queryselectorall instead of queryselector since latter selects first element opposed of them.

then use loop shown below

var getselected = document.queryselectorall('[data-attr~="sel"]'); var selectednums = []; (var = 0; < getselected.length; i++) {     selectednums.push(getselected[i].dataset.num); }  alert(selectednums.join(','));

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