Can filters be assigned values ​​in Vue?

Filters in Vue.js cannot be assigned a value, they are read-only properties that modify the incoming value but do not change the original value. Filters work by creating a function that receives an input value and returns a modified value, then applies the filter to an expression, using the |'|' symbol to separate the filter from the value. Vue.js automatically passes the value in the expression to the filter function and replaces the original value with the return value.

Can the filter in Vue.js be assigned a value?

No, the filter in Vue.js cannot be assigned a value.

Filters are read-only properties that modify the incoming value without changing the original value. They work by:

1. Create a filter function that receives an input value and returns a modified value.
2. Apply the filter to an expression and use the | symbol to separate the filter from the value in the expression.
3. Vue.js will automatically pass the value in the expression to the filter function and replace the original value with the return value.

For example:

<code class="vue">// 创建一个名为 "capitalize" 的过滤器
Vue.filter('capitalize', function (value) {
  return value.charAt(0).toUpperCase() + value.slice(1);
});

// 在模板中使用过滤器
<p>{{ message | capitalize }}</p></code>

When using the capitalize filter, it will convert the value of the message attribute to capitalize the first letter. However, it does not change the value of the message property itself.

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