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Make something like :class for dataset #9855

trenyture opened this Issue Apr 10, 2019 · 3 comments


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trenyture commented Apr 10, 2019

What problem does this feature solve?

I am using a lot the dataset of html and I know I could use :data-something="value" to bind value on the HTML element. But, as you cannot make a for inside the html element (for example to iterate the keys of an object and put it in datas), it could be great to use the same as :class to put datas in the HTML element...

What does the proposed API look like?

For example, you could do something like this :

<div :data="{id: 2, userId: 5, :userName: 'John Doe', userAge: null}">

Would render in pure HTML like this :

<div data-id="2" data-user-id="5" data-user-name="John Doe">

And so you can access this datas in the .dataset of JavaScript or .data() of jQuery.


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posva commented Apr 10, 2019

mmh, I would say this would be a custom directive


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Justineo commented Apr 10, 2019

I think this is basically a sub-feature request of #8767 and let's close this in favor of that one.

@Justineo Justineo closed this Apr 10, 2019


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trenyture commented Apr 19, 2019

Ok, thanks for the custom directive idea ... It did the trick! ;)
For those looking on the same idea this is my directive :

Vue.directive('datas', function (el, binding, vnode) {
	let d = binding.value;
	if(d != null && d instanceof Object && typeof d == 'object') {
		let idx = Object.keys(d);
		for(let i = 0, len = idx.length; i < len; i++){
			if(d[idx[i]] != null){
				//Here we are going to transform the string in camelCase because of dataset
				el.dataset[idx[i].replace(/[^a-zA-Z0-9]+(.)/g, (m, chr) => chr.toUpperCase())] = d[idx[i]];

And then you could use it like this : <div v-datas="{user-id: 5, user-pseudo: 'trenyture'}">

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