Results for &#x201C;Traversal &amp; selection&#x201D;

Find the position of a matching item

TypeScript: findIndex returns -1 when the predicate matches nothing.

JavaScriptArray traversal & selection

Iterate with array indices and values

JavaScript: entries provides each position and value without a separate counter.

JavaScript✓ Tested

Iterate with array indices and values

TypeScript: entries provides each position and value without a separate counter.

JavaScriptArray traversal & selection

Pair corresponding array items by position

JavaScript: Validate equal lengths before zipping when missing counterparts would be an error.

JavaScript✓ Tested

Pair corresponding array items by position

TypeScript: Validate equal lengths before zipping when missing counterparts would be an error.

JavaScriptArray traversal & selection

Read the final array item with a negative index

JavaScript: at supports negative positions counted from the end.

JavaScript✓ Tested

Read the final array item with a negative index

TypeScript: at supports negative positions counted from the end.

Return to the previous collection in a chain

jQuery: end restores the selection before the last traversal operation.

Select a range from a collection

jQuery: slice includes the start index and excludes the end index.

Select an element by zero-based position

jQuery: eq returns a jQuery collection containing the selected index.

Select an immediate parent

jQuery: parent moves exactly one level up the DOM.

Select direct children without deeper descendants

jQuery: children limits matching to one level.