performance - How to efficiently count the number of keys/properties of an object in JavaScript - Stack Overflow

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Tue Dec 07 2021 14:27:08 GMT+0000 (UTC)

Object.keys(obj).length

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https://stackoverflow.com/questions/126100/how-to-efficiently-count-the-number-of-keys-properties-of-an-object-in-javascrip

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How to Save HTML Form Data in JSON - Express

<form action="/new" method="post">
 
  <input name="title" type="text">
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  <button type="submit">Submit Form</button>
 
</form>

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Replace Textarea with Codemirror editor

<link rel="stylesheet" type="text/css" href="plugin/codemirror/lib/codemirror.css">

<body>
	<textarea class="codemirror-textarea"></textarea>
</body>

<script>

$(document).ready(function(){
    var codeText = $(".codemirror-textarea")[0];
    var editor = CodeMirror.fromTextArea(codeText, {
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});

</script>

<script type="text/javascript" src="plugin/codemirror/lib/codemirror.js"></script>

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npm install heroku-ssl-redirect

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});


var Example = mongoose.model('Example', exampleSchema);
module.exports = Example;

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function full_stack_developer() {
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 const isRequired = () => { throw new Error('param is required'); };

const hello = (name = isRequired()) => { console.log(`hello ${name}`) };

// These will throw errors
hello();
hello(undefined);

// These will not
hello(null);
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The idea here is that it uses default parameters, like how the b parameter here has a default if you don’t send it anything:
function multiply(a, b = 1) {
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Mapping an Object

const object1 = {
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for (let [key, value] of Object.entries(object1)) {
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function copyToClipboard(){

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How to store fetch response in javascript variable - Stack Overflow

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jQuery.post() - AJAX for post requests

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performance - How to efficiently count the number of keys/properties of an object in JavaScript - Stack Overflow

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