Style the "focus" pseudo-class of an input element using Vue programmatically

Question

Style the "focus" pseudo-class of an input element using Vue programmatically

Currently, I have been utilizing event listeners to manipulate the :focus pseudo-class of an input element:

const element = document.getElementById("myElementID");

element.addEventListener("focus", (e) => {
  e.target.style.borderColor = "red";
});

element.addEventListener("blur", (e) => {
  e.target.style.borderColor = "";
});

JSFiddle

While this approach is functional, I am curious if there exists a more refined or conventional method to accomplish the same task using Vue?

css vue.js

Answer 1

Answer №1

When using Vue, you can avoid listening to native events using vanilla JS syntax and getElementById. Instead, you can directly specify the v-on-handler on the element in the template like this:

// Vue SFC
<template>
  <div>
    <input @blur="doSomething" @focus="doSomethingElse" />
  </div>
</template>

<script>
export default {
  methods: {
    // Both methods receive the same native dom event as a vanilla listener would
    doSomething(e) {
      e.target.style.borderColor = "red";
    },
    doSomethingElse(e) {
      e.target.style.borderColor = "";
    }
  }
}
</script>

If simple styling is all you need, then a pure CSS solution, as suggested by Manas Khandelwal, is sufficient and preferred.

Answer 2

When using Vue, you can avoid listening to native events using vanilla JS syntax and getElementById. Instead, you can directly specify the v-on-handler on the element in the template like this:

// Vue SFC
<template>
  <div>
    <input @blur="doSomething" @focus="doSomethingElse" />
  </div>
</template>

<script>
export default {
  methods: {
    // Both methods receive the same native dom event as a vanilla listener would
    doSomething(e) {
      e.target.style.borderColor = "red";
    },
    doSomethingElse(e) {
      e.target.style.borderColor = "";
    }
  }
}
</script>

If simple styling is all you need, then a pure CSS solution, as suggested by Manas Khandelwal, is sufficient and preferred.

Answer 3

Answer №2

To achieve this effect using CSS, you can follow these steps:

input {
  outline: none;
}

input:focus {
  border-color: blue;
}

<input type="text" id="uniqueID" />

Answer 4

To achieve this effect using CSS, you can follow these steps:

input {
  outline: none;
}

input:focus {
  border-color: blue;
}

<input type="text" id="uniqueID" />

Style the "focus" pseudo-class of an input element using Vue programmatically

Answer №1

Answer №2

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