Condition in v-bind:Style - VueJS

Question

I have an easy question for which I hope you could help:

  


        
                      

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Answer 1

Feed Git's answer is perfect, here's another example with multiple attributes. Just separate with commas:

:style="[printing ? {'margin' : '0px 0px 20px 0px', 'min-height': '830px', 'box- shadow': 'none', 'border': 'none'} : {'margin': '0px 0px 20px 0px', 'min-height': '830px'}]

The form follows (for someone like me who's new at this):

:style="[boolVariable ? { true } : { false }]

Answer 2

For Background Color you have to pay special attention you can't use

:style="[ isDark ? {background-color: 'black'}: {background-color: 'white'}]"

it won't work you can use the backgroundColor

:style="[ isDark ? {backgroundColor: 'black'}: {backgroundColor: 'white'}]"

Answer 3

The previous references were very good, but for me what really worked was this:

<input type="text" 
v-bind:style=" boolVariable ? 'border: 1px solid orange;' : 'border: none;' ">

In the documentation: https://vuejs.org/v2/guide/syntax.html#Using-JavaScript-Expressions

Regards!

Answer 4

Use a computed property for this:

<figure :style="'{ background: `${background}` }'">

...

data () {
    return {
        item: {
           featured_photo: null
        }
     }
},
computed: {
    background () {
        return !item.featured_photo ? '#fff' : `url(${item.featured_photo}) center no-repeat`
    }
},
methods: {
    setPhoto(val) {
         this.item.featured_photo = val
    }
}

Edit:

I'm making a bunch of assumptions here with your API and routes. This is a rough stab at generalizing it:

<figure :style="'{ background: `${getBackground('main_featured')}` }'">
<figure :style="'{ background: `${getBackground('featured_photo', 1)}` }'">
<figure :style="'{ background: `${getBackground('featured_photo', 2)}` }'">


...

methods: {
     async getBackground (type, index) {
          let r = await axios.get(`/images/${type}/${index}`).then(r => r.data.background)
          return r || '#fff'
     }
 }

Answer 5

If you're iterating through an object, you can use a method. In such cases when the style is dependent on a property in the object, this is the only option I have found .... none of the options above work.

<div v-for="thing in things">
   <div :style="'{ background: `${background(thing)}` }'"></div>
</div>
...

data () {
    return {
        item: {
           featured_photo: null
        }
     }
},
methods: {
    background (thing) {
        return thing ? 'red' : 'black'`
    }
}

Answer 6

In quasar framework

V-bind:style=" $q.screen.lt.md ? 'height:600px' : ''"