CODEWITHSUNDEEP
vue.js
user2483724
user2483724

Reputation: 2119

Difference between v-bind and {{}}?

I have an input field with the value field being passed a string stored in Vuex. The input fields changes are debounced and the new string synced to Vuex.

When bound like this :value="vuexState.myString, when typing, the cursor jumps to the end of the line.

When bound like this value={{vuexState.myString}}, the cursor stays where it is.

According to the guide: http://vuejs.org/guide/syntax.html#Arguments These two should be the same, with the {{ }} style being internally converted to :bind. Could this be a bug?

My theory is that the cursor jumping occurs because the vuex state change re-renders the input and that the {{ }} style is interpolated only once while the binding syntax re-renders the input every change.

I am currently using value={{vuexState.myString}} but I'd like to know what is happening or if there is a better way to do this.

Upvotes: 16

Views: 3801

Answers (3)

LiangWang
LiangWang

Reputation: 8836

v-text:'something' === {{something}}

Upvotes: 1

Édouard Lopez
Édouard Lopez

Reputation: 43401

It's in the documentation about Interpolation and has been deprecated (see. Migration guit from 1.x)

Deprecated

This is the old way

<div class="btn btn-primary hint--top {{class}}"></div>

Solution

Use Javascript expression instead:

<div v-bind:class="'btn btn-success hint--top '+ class "></div>

Upvotes: 9

user900362
user900362

Reputation:

Take a look at the console, it seems like it has been deprecated in favour of the colon syntax or v-bind:

vue.js:2237 [Vue warn]: foo="{{foo}}": Interpolation inside attributes has been deprecated. Use v-bind or the colon shorthand instead.

Upvotes: 2

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