javascript - dataset property doesn't work with objects? -

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el2.dataset.stuff = document.getelementbyid('el1');

doesn't seem work.

i need able access innerhtml property of el1, later.

el2.dataset.stuff = document.getelementbyid('el1').innerhtml;

works, don't idea of storing duplicate content in variables. if have many elements, eat lot of memory.

i guess because dataset requires strings? if that's true, how set reference elmement inside el2 ?

actually can store strings in dataset attributes definition.

so in case either should have separate data-structure (which should accessible in both needed scopes) store reference this:

var mypointers = {   'el2': {     'stuff': document.getelementbyid('el1')   } };  // later  var el1 = mypointers.el2.stuff;

or store id of el1 , retrieve actual element, when needed:

el2.dataset.stuff = 'el1';  // later   var el1 = document.getelementbyid( el2.dataset.stuff );

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