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<span class="hljs-number">1000000000</span> <span class="hljs-comment">// Is this a billion? a hundred millions? Ten millions?</span>
<span class="hljs-number">101475938.38</span> <span class="hljs-comment">// what scale is this? what power of 10?</span>
<span class="hljs-keyword">const</span> FEE = <span class="hljs-number">12300</span>;
<span class="hljs-comment">// is this 12,300? Or 123, because it's in cents?</span>
<span class="hljs-keyword">const</span> AMOUNT = <span class="hljs-number">1234500</span>;
<span class="hljs-comment">// is this 1,234,500? Or cents, hence 12,345? Or financial, 4-fixed 123.45?</span>
<span class="hljs-number">1_000_000_000</span> <span class="hljs-comment">// Ah, so a billion</span>
<span class="hljs-number">101_475_938.38</span> <span class="hljs-comment">// And this is hundreds of millions</span>
<span class="hljs-keyword">let</span> fee = <span class="hljs-number">123_00</span>; <span class="hljs-comment">// $123 (12300 cents, apparently)</span>
<span class="hljs-keyword">let</span> fee = <span class="hljs-number">12_300</span>; <span class="hljs-comment">// $12,300 (woah, that fee!)</span>
<span class="hljs-keyword">let</span> amount = <span class="hljs-number">12345_00</span>; <span class="hljs-comment">// 12,345 (1234500 cents, apparently)</span>
<span class="hljs-keyword">let</span> amount = <span class="hljs-number">123_4500</span>; <span class="hljs-comment">// 123.45 (4-fixed financial)</span>
<span class="hljs-keyword">let</span> amount = <span class="hljs-number">1_234_500</span>; <span class="hljs-comment">// 1,234,500</span>
<span class="hljs-number">0.000001</span> <span class="hljs-comment">// 1 millionth</span>
<span class="hljs-number">0.000_001</span> <span class="hljs-comment">// 1 millionth</span>
<span class="hljs-number">.000_001</span> <span class="hljs-comment">// 1 millionth</span>
-<span class="hljs-number">.000_001</span> <span class="hljs-comment">// 1 millionth</span>
<span class="hljs-number">1e10_000</span> <span class="hljs-comment">// 10^10000 -- granted, far less useful / in-range...</span>
<span class="hljs-keyword">let</span> nibbles = <span class="hljs-number">0b1010_0001_1000_0101</span>;
<span class="hljs-keyword">let</span> message = <span class="hljs-number">0xA0_B0_C0</span>;
<span class="hljs-keyword">let</span> x1 = _52; <span class="hljs-comment">// This is an identifier, not a numeric literal</span>
<span class="hljs-keyword">let</span> x2 = <span class="hljs-number">5_2</span>; <span class="hljs-comment">// OK (decimal literal)</span>
<span class="hljs-keyword">let</span> x7 = <span class="hljs-number">0x5_2</span>; <span class="hljs-comment">// OK (hexadecimal literal)</span>
<span class="hljs-number">0xff</span>
<span class="hljs-number">0xdead_beef</span>
<span class="hljs-number">0o52</span>
<span class="hljs-number">0O52</span>
<span class="hljs-number">0xa</span>
<span class="hljs-number">0Xa</span>
<span class="hljs-number">0XA</span>
<span class="hljs-number">0xA</span>
<span class="hljs-number">0n</span>
<span class="hljs-number">2n</span>
<span class="hljs-number">20n</span>
<span class="hljs-number">2_0n</span>
<span class="hljs-number">2_00n</span>
<span class="hljs-number">2_0_0n</span>
<span class="hljs-number">20_0n</span>
-<span class="hljs-number">20_0n</span>
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