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    chain.js classList.js collection.js delegate.js extend.js has.js invoke.js isBlank.js isFunction.js isObject.js isRegExp.js isString.js isUndefined.js mapEvents.js mapSelections.js matches.js pluck.js query.js queryAll.js result.js tap.js template.js tokenize.js util.js washi.js

  • query.js

  • ¶

    An abstraction around document.querySelector.

    • Given an element, it returns it.
    • Given a string, it performs a selection
    • Otherwise returns null

    For example:

    query('.selector')
query('.selector', document.body);

    var isDOM    = require('is-dom');
var isString = require('./isString');

module.exports = function(el, root) {
  if (isDOM(el)) {
  • ¶

    Don’t do any needless work if the first argument is already an element

        return el;
  } else if (isString(el)) {
  • ¶

    For safety, always check if the root is an actual DOM element

        return (isDOM(root) ? root : document).querySelector(el);
  } else {
    return null;
  }
};