public/browser
1
0
Fork 0
mirror of https://github.com/lightpanda-io/browser.git synced 2025-12-17 17:38:10 +00:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

Use correct 'this' on MutationObserver callback

Browse Source 
Add support for MutationObserver.disconnect
This commit is contained in:
Karl Seguin
2025-09-30 19:36:06 +08:00
parent 651521d346
commit b47d8a794c
2 changed files with 75 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/tests/dom/mutation_observer.html
View File

@@ -11,15 +11,19 @@
var nb = 0;
var mrs;
new MutationObserver((mu) => {
let cb_this1;
let mu1 = new MutationObserver(function(mu) {
mrs = mu;
nb++;
}).observe(document.firstElementChild, { attributes: true, attributeOldValue: true });
cb_this1 = this;
});
mu1.observe(document.firstElementChild, { attributes: true, attributeOldValue: true });
document.firstElementChild.setAttribute("foo", "bar");
document.firstElementChild.firstChild.setAttribute("foo", "bar");
testing.eventually(() => {
testing.expectEqual(1, nb);
testing.expectEqual(cb_this1, mu1);
testing.expectEqual('attributes', mrs[0].type);
testing.expectEqual(document.firstElementChild, mrs[0].target);
testing.expectEqual('bar', mrs[0].target.getAttribute('foo'));
@@ -30,14 +34,17 @@
var nb2 = 0;
var mrs2;
var node1 = $('#p1').firstChild;
new MutationObserver((mu) => {
let mu2 = new MutationObserver((mu) => {
mrs2 = mu;
nb2++;
}).observe(node1, { characterData: true, characterDataOldValue: true });
cb_this2 = this;
})
mu2.observe(node1, { characterData: true, characterDataOldValue: true });
node1.data = "foo";
testing.eventually(() => {
testing.expectEqual(1, nb2);
testing.expectEqual(window, cb_this2);
testing.expectEqual('characterData', mrs2[0].type);
testing.expectEqual(node1, mrs2[0].target);
testing.expectEqual('foo', mrs2[0].target.data);