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snippets/js/s/bind-all.md

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+---
+title: Bind all object methods
+type: snippet
+language: javascript
+tags: [object,function]
+cover: laptop-with-code
+dateModified: 2020-11-03T22:11:18+02:00
+---
+
+Binds methods of an object to the object itself, overwriting the existing method.
+
+- Use `Array.prototype.forEach()` to iterate over the given `fns`.
+- Return a function for each one, using `Function.prototype.apply()` to apply the given context (`obj`) to `fn`.
+
+```js
+const bindAll = (obj, ...fns) =>
+  fns.forEach(
+    fn => (
+      (f = obj[fn]),
+      (obj[fn] = function() {
+        return f.apply(obj);
+      })
+    )
+  );
+```
+
+```js
+var view = {
+  label: 'docs',
+  click: function() {
+    console.log('clicked ' + this.label);
+  }
+};
+bindAll(view, 'click');
+document.body.addEventListener('click', view.click);
+// Log 'clicked docs' when clicked.
+```