The function function in Vue is used to define reusable component methods: define a method object methods and define the function function in it. Parameters can be added after the method name, separated by commas. You can use the return statement to return a value. Arrow functions can be used to simplify single-line functions. Computed properties and listeners are also methods used for specific scenarios.
Usage of function
function in Vue
function
Function It is a way to define component methods in Vue. It allows you to create reusable code blocks and call them in different components.
Usage
<code class="js">methods: { myFunction() { // 函数实现 } }</code>
The above code defines a method named myFunction
, which can be used in the component.
Example
<code class="js"><template> <button @click="myFunction()">Click Me</button> </template> <script> export default { methods: { myFunction() { console.log('Button clicked!'); } } } </script></code>
In this example, when the user clicks the button, it will call the myFunction
method and log a message in the console .
Parameters
function
Functions can accept parameters by listing them after the function name.
<code class="js">methods: { myFunction(param1, param2) { // 函数实现 } }</code>
Return value
function
A function can return a value. Just use the return
statement.
<code class="js">methods: { myFunction() { return 'Hello world!'; } }</code>
Other features
<code class="js">methods: { myFunction: () => { // 函数实现 } }</code>
<code class="js">computed: { myComputedProperty() { // 计算属性实现 } }</code>
<code class="js">watch: { myDataProperty(newValue, oldValue) { // 数据变化时的侦听器实现 } }</code>
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