(public).sospep.systems ~ view step ~ question-es6

<h2>question</h2>
<ol>
<li>] <span style="font-size: medium;">what is the difference between "var" and "let" keywords?</span></li>
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<h2>question-category</h2>
<ol>
<li>[] GENERAL</li>
<li>[+=] es6</li>
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<h2>answer(source)</h2>
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<li>[] </li>
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<h2>answer(me)</h2>
<ol>
<li>[] <strong>var</strong> is a javascript keyword that is used to declare a var, it is the original keyword used to declare variables in javascript, for example ...</li>
<ol>
<li>var name;</li>
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<li>[] <strong>let</strong> is a new javascript keyword, introduced in es6, that is used to declare variables, for example ...</li>
<ol>
<li>[] let name;</li>
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<li>[] both an be used to optionally initially the value of the variable</li>
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<li>var name = "don"</li>
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<li>[] the biggest difference between var and let is that <strong>let has block level scope</strong></li>
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<li>[] it's lifecycle begins and ends in the scope where it is defined</li>
<li>[] a variable declared in the doSomething() function is only available/accessible in the doSomething function()</li>
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<li>[] where <strong>var has function level scope</strong>,</li>
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<li>[] it's lifecyle begins and ends in the function where it is defined or</li>
<li>[] it has global scope if it declared outside of any function</li>
</ol></ol>
<h2>source</h2>
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<li><strong>[] # 5767 -&nbsp; </strong><strong><a href="/view/article?id=5767" target="_blank"><span>javascript-interview-questions-top-10</span></a> </strong>[] youtuber tech smith, gives his thoughts on what some of the top (most commonly asked) javascript interview questions are? He explains answers to each of his questions.</li>
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<h2>reference</h2>
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<li><strong>[] <br /></strong></li>
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