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Href overrides ng-click in Angular.js

javascript
angularjs
navigation
ui-router
Alex KataevbyAlex Kataev·Nov 9, 2024
TLDR

Resolve href eclipsing ng-click in Angular.js by setting href="#" and using $event.preventDefault() within ng-click. This keeps the clickable link appearance while making sure the Angular.js function runs without page redirection interference. Here's the code snippet simplified:

<a href="#" ng-click="yourFunction(); $event.preventDefault()">Click me</a>

Bear in mind, the $event.preventDefault() call is instrumental in stopping the default anchor behavior, which is necessary for ng-click to perform without interruption.

Smooth cohabitation of ng-click and href

To orchestrate a frictionless integration of both attributes, consider employing these techniques:

Utilizing ng-href for dynamic URI

Opt for ng-href over href when assigning dynamic URLs. This guarantees the hyper-reference remains unusable until the Angular.js variable populates it, avoiding premature navigation:

// "URI made me do it" - ng-href <a ng-href="{{url}}" ng-click="yourFunction($event)">Navigate</a>

Prioritizing with directive command

Craft a custom directive where ng-click takes the front seat, and invoke $location.path() within your function to control navigation:

app.directive('myDirective', function() { return { link: function(scope, element, attrs) { element.bind('click', function($event) { $event.preventDefault(); // "Just following orders" - scope scope.$apply(function() { scope.yourFunction(attrs.ngClick); }); }); } }; });

Opting for button element

Where actions are not naturally link-related, choose the button element instead. Preserve the URL in a data attribute if need be:

<button ng-click="yourFunction()" data-url="/path">Click me</button>

Harmonizing with Bootstrap compatibility

When merging with Bootstrap, retain the href in anchor tags for stylistic purposes. Use ng-click to redirect the action:

<a href="#" ng-click="yourFunction($event); $event.preventDefault()">Click me</a>

Visualizing the process

Let's imagine train tracks (🛤️) showing a junction switch (🚦) for clarity:

🛤️ Track A: ng-click event 🚶‍♀️ 🛤️ Track B: href navigation 🚆 🚦 Switch: Directive in Angular.js

Understand that when ng-click and href merge, the href acts like a train (🚆) which plows through the pedestrian (🚶‍♀️) trying to cross the track:

🚆=href ➡️🛤️ Track B : Path taken, IGNORES 🚶‍♀️=ng-click

Switching Directive (🚦) can direct the control:

🚦 Set to `ng-click`: Event wins, leaving 🚆=href at a halt. 🚦 Set to `href`: Navigation takes place, and 🚶‍♀️=ng-click waits.

Take home: configuring the switch (Angular directive) correctly is vitally crucial for ng-click to supersede href.

Angular.js provides tools to handle navigation nuances within your apps:

The power of $location service

For enforced navigation after actioning ng-click, make use of Angular's $location service:

$scope.yourFunction = function() { // "No place like /newpath" - Dorothy (not from Wizard of Oz) $location.path('/newpath'); };

State maintenance with UI-Router

For those using UI-Router, use state transitions to navigate between views:

$scope.yourFunction = function() { $state.go('stateName'); };

Embedging URI in ng-click

Decentralize the URL management to the scope function and uncouple navigation logic from template:

<a href="#" ng-click="navigateTo('/path')">Click Me</a>
$scope.navigateTo = function(path) { // "Because I said so" - $location.path $location.path(path); };