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30secondsofcode
2018-08-14 19:59:47 +00:00
parent f8d3c5ccf5
commit d73c39550c
3 changed files with 1584 additions and 1576 deletions
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@ -2604,9 +2604,9 @@
"type": "snippet",
"attributes": {
"fileName": "isArrayLike.md",
"text": "Checks if the provided argument is array-like (i.e. is iterable).\n\nUse the spread operator (`...`) to check if the provided argument is iterable inside a `try... catch` block and the comma operator (`,`) to return the appropriate value.",
"text": "Checks if the provided argument is array-like (i.e. is iterable).\n\nCheck if the provided argument is not `null` and that its `Symbol.iterator` property is a function.",
"codeBlocks": [
"const isArrayLike = val => {\n try {\n return [...val], true;\n } catch (e) {\n return false;\n }\n};",
"const isArrayLike = obj => obj != null && typeof obj[Symbol.iterator] === 'function';",
"isArrayLike(document.querySelectorAll('.className')); // true\nisArrayLike('abc'); // true\nisArrayLike(null); // false"
],
"tags": [
@ -2616,7 +2616,7 @@
},
"meta": {
"archived": false,
"hash": "0d30400ab43a3e2706c3684495c9ae80361b50ca0606c7bbd4f96ca423c89c18"
"hash": "00b43a2b430d5d9205046ad6fbf7442f0d4507895c82545753253b5b5f97fa3a"
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{