I have a component that is basically an Icon and a tooltip; it shows the tooltip( whose text comes from the parent component as a prop) on mouse hover. I implemented the tooltip with the help of pseudo-elements so I need to update the pseudo element's content with the prop's value. I am also aware of the fact that Pseudo element rules of CSS aren’t part of the DOM, and therefore they can’t be altered using JavaScript methods, but I found a bunch of workarounds that basically work for any CSS property but not content(I can see they work (e.g. for width property of tooltip or its color ) but strangely not for the content property), here is what I have done so far, any help would be appreciated:
<template>
<div>
<!-- <style>
:root {
--info-msg: {{tooltipContent}};
}
</style> -->
<div class="infoBar">
<svg-icon
fill="#d5d5dc"
:width="16"
:height="16"
name="common/c-info"
class="infoBar__icon"
/>
</div>
</div>
</template>
<script>
export default {
name: 'ContentInfo',
props: {
tooltipContent: {
type: String,
default: 'hint text goes here'
}
},
mounted () {
console.log(this.tooltipContent)
this.applyCSS()
},
beforeUpdate () {
this.applyCSS()
},
methods: {
applyCSS () {
const cssRule = `
.infoBar:after{
content: ${this.tooltipContent};
}`
const style = document.createElement('style')
style.type = 'text/css'
this.$el.appendChild(style)
style.innerHTML = cssRule
}
}
}
</script>
<style lang="postcss" >
.infoBar{
position: relative;
margin-left: 24px;
&::after {
background-color: #000;
font-size: 12px;
color: #fff;
border-radius: 2px;
width: 198px;
height: 40px;
/*content: var(--info-msg)*/
display: none;
padding: 11px 26px 10px 27px;
position: absolute;
top: 0;
left: 80%;
transform: translate(-50%, calc(-100% - 10px));
z-index: 999;
}
&::before {
background-color: #000;
content: '';
display: none;
position: absolute;
width: 10px;
height: 6px;
z-index: 999;
top: 0;
left: 80%;
transform: translate(-50%, calc(-100% - 10px)) rotate(45deg);
}
&:hover::after {
display: block;
}
&:hover::before {
display: block;
}
&__icon:hover{
fill: #e4002b;
}
}
</style>
follow these steps and you can use props in the css as css variables:
JSON.stringify() (this is the case for the content css property)run the example bellow and see for yourself, both color and text of the after element showing by hover are coming as a prop from the parent component:
Vue.component('pseudo', {
data() {
return {
title: 'Hover me',
}
},
props: {
color: {
type: String,
},
text: {
type: String,
}
},
computed: {
cssVars() {
return {
'--color': this.color,
'--text': JSON.stringify(this.text),
}
}
},
template: `<div class="content" :style="cssVars">{{title}}</div>`,
});
var vm = new Vue({
el: '#app',
});.content {
color: red;
}
.content:hover::after {
content: var(--text);
color: var(--color);
margin-left: 20px;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<pseudo color="green" text="I'm from Prop!!"></pseudo>
</div>Collected from the Internet
Please contact [email protected] to delete if infringement.
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