4 examples of 'queryselector attribute' in JavaScript

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26querySelector: function querySelector() {
27 return null;
28},
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16export function attribute (node: Node, selector: TSQuerySelectorNode): boolean {
17 const obj: any = getPath(node, selector.name);
18
19 // Bail on undefined but *not* if value is explicitly `null`:
20 if (obj === undefined) {
21 return false;
22 }
23
24 const { operator } = selector;
25
26 if (operator == null) {
27 return obj != null;
28 }
29
30 const { type, value } = selector.value as TSQuerySelectorNode;
31
32 const matcher = OPERATOR[operator];
33 if (matcher) {
34 return matcher(obj, value, type);
35 }
36 return false;
37}
26querySelector() {
27 return {
28 firstChild: {
29 textContent: 'a',
30 },
31 };
32}
18function querySelector(elementLocator, documentLocator)
19{
20 var docElement;
21 if (documentLocator) docElement = document.querySelector(documentLocator);
22 else docElement = document;
23
24 return docElement.querySelector(elementLocator);
25}

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