How to modify the background in vue

In this way, when the color variable changes during the running of the Vue instance, the background color of the div will also change accordingly.

Method 2: Use CSS classes

In addition to using style binding, we can also use CSS classes to change the background of Vue components. Specifically, this can be achieved by following the following steps.

1. Declare a new CSS class that will contain the background information that needs to be modified. For example:

.bg-red {
background-color: red;
}

2. Bind the component that needs to modify the background to this CSS class . For example:

This will use the bg-red CSS Class to render this div element.

3. If you need to modify the variable, you need to declare a variable in data, for example:

data() {
return {

bgClass: 'bg-red'

}
}

And bind this variable to :class, for example:

In this way, when the bgClass variable changes during the running of the Vue instance, the CSS class of the div will also change accordingly.

Method 3: Use dynamic components

Dynamic components are another powerful feature provided by Vue. It allows us to dynamically modify the implementation of components at runtime, including modifying the background and so on. Specifically, this can be achieved by following the following steps.

1. Declare components that need to dynamically modify the background. For example:

2. Add a dynamic component to the parent component. For example:

Hello, World!

This Will replace my-component in the parent component with the child component, and perform some initialization on the child component. This initialization involves setting the child component's color property to red.

3. If you need to modify the variable, you can declare a variable in data, for example:

data() {
return {

bgComponent: 'my-component', bgOptions: { color: 'red' }

}
}

And pass these variables into the dynamic component, for example:

Hello , World!

In this way, when the bgOptions.color variable changes during the running of the Vue instance, the background color of the subcomponent will also change accordingly.

Summary

It is not difficult to modify the background of Vue components. In this article we introduce three common methods to modify the background of Vue components. Each method has its own advantages and disadvantages, and readers can choose to use it according to the actual situation. It needs to be emphasized that no matter which method is used, be careful not to directly manipulate the DOM to modify the background color, because this will make the Vue state and the DOM state inconsistent, causing a series of problems.

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