7 ms·
What does the $$ mean?
by hamxiaoz 13y ago
What does the $$ mean?
- thedufer 13y agoLooking at it in the console, it looks like $ returns a single DOM element and $$ returns a NodeList (array-like object) of DOM elements. Not sure what library that is.
- scrabble 13y agoPrototypeJS works that way.
- reubenmorais 13y agoNo library, at least in Firefox it's defined by devtools and only works in the console (provided the page doesn't have it's own $ and $$ globals). [0] http://dxr.mozilla.org/mozilla-central/source/toolkit/devtools/server/actors/webconsole.js#1016 http://dxr.mozilla.org/mozilla-central/source/toolkit/devtoo... [1] http://dxr.mozilla.org/mozilla-central/source/toolkit/devtools/webconsole/utils.js#1407 http://dxr.mozilla.org/mozilla-central/source/toolkit/devtoo... Edit: It works in the WebKit devtools too: [0] https://mxr.mozilla.org/chromium/source/src/third_party/WebKit/Source/core/inspector/InjectedScriptSource.js#1315 https://mxr.mozilla.org/chromium/source/src/third_party/WebK...
- dmnd 13y agoIt's shorthand for document.querySelectorAll: https://developers.google.com/chrome-developer-tools/docs/commandline-api#selector_1 https://developers.google.com/chrome-developer-tools/docs/co...