Скачать или смотреть Understanding the this.$route.fullPath in Vue Router: Why It Differs from Your Browser's Address Bar

Discover why `this.$route.fullPath` in Vue Router might not match the browser's address bar and learn how Vue Router interacts with URLs!
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Understanding the this.$route.fullPath in Vue Router: Why It Differs from Your Browser's Address Bar

Vue Router is a vital part of building modern single-page applications with Vue.js, allowing for smooth navigation and routing without the need for full page reloads. However, developers can occasionally run into discrepancies between the values of this.$route.fullPath and what is shown in the browser's address bar. If you've been puzzled by this, you're not alone! Let's break down the issue and uncover the reason behind this behavior.

The Problem with this.$route.fullPath

When you log this.$route.fullPath in your component’s updated() lifecycle hook, you may find that it doesn’t match the URL displayed in your browser's address bar. This can lead to confusion, especially for those new to Vue Router.

Key Questions

What is this.$route.fullPath attempting to represent?

Why does it not align with the address bar contents?

Understanding Vue Router's Behavior

What Does this.$route.fullPath Represent?

this.$route: In a Vue component, this.$route provides information about the current route, which includes properties like params, query, and fullPath.

fullPath: Specifically, fullPath is designed to reflect the URL path and query—essentially, everything that comes after the domain but not including the hash fragment (anything after the # sign).

How Vue Router Handles URLs

Vue Router operates in a manner that focuses primarily on the fragment of the URL, which is what comes after the hash (# ). This behavior is essential for single-page applications (SPAs) because it allows for navigation without full-page reloads. Here’s the breakdown:

Browser's Address Bar: Shows the complete URL, including any hash fragments and other components.

Vue Router: Concentrates on the fragment part of the URL, ignoring anything that precedes the # sign. For example, if the address bar reads http://example.com/# /home?search=test, this.$route.fullPath will only report # /home?search=test.

Using Window.location.href for Full URL

If you need the entire current URL (including the initial path before the hash), then you will want to rely on window.location.href instead. This method captures the complete URL string as it appears in the browser:

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When to Use Which?

Use this.$route.fullPath if you're interested in router-related manipulations or displaying routing information within your application context.

Use window.location.href if you need the full URL for external APIs, redirection, or complete page referencing.

Conclusion

Understanding how Vue Router interacts with URL fragments provides clarity on why this.$route.fullPath can show different results from what is displayed in the browser address bar. By delving into how Vue Router works and using the correct methods for your needs, you can avoid confusion and create a smoother user experience.

Remember that, in the realm of single-page applications, managing routing effectively requires an understanding of both the advantages and limitations of the tools available to you. Happy coding!