javascript - Change value of element inside img tag in JS -


i have html fragment display product image:

<img src="/some/path" border="0" id="bigimg"  data-zoom-image="/some/path">

the code data-zoom-image path larger image on mouse over, can zoom in on image.

i have javascript function when click somewhere else change picture... this:

function showlarge(path) {  var full_path = 'upload/product_image/large_'+path;   document.getelementbyid("bigimg").src = full_path;   document.getelementbyid("bigimg").data-zoom-image = full_path; }

i want change data-zoom-image value when src of image changes... tried adding line document.getelementbyid("bigimg").data-zoom-image = full_path; doesn't work... how should this...

thank you

you can use setattribute changes value of existing attribute on specified element.

document.getelementbyid("bigimg").setattribute('data-zoom-image',full_path);

the document here:

https://developer.mozilla.org/en-us/docs/web/api/element.setattribute


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