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String.format() in JS a la Python

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String.prototype.format = function(arguments) {
    var formatted = this;
    for(arg in arguments) {
        formatted = formatted.replace("{" + arg + "}", arguments[arg]+'');
    }
    return formatted;
};
https://snipt.net/embed/26bdd54b82cdd17728f71333417b8035/
/raw/26bdd54b82cdd17728f71333417b8035/
26bdd54b82cdd17728f71333417b8035
js
JavaScript
7
2019-08-24T20:56:28
True
False
False
/api/public/snipt/17958/
stringformat-in-js-a-la-python-usage-0-is-a-good-1formatsayanboy
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1">1</a> <a href="#L-2">2</a> <a href="#L-3">3</a> <a href="#L-4">4</a> <a href="#L-5">5</a> <a href="#L-6">6</a> <a href="#L-7">7</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="nb">String</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">format</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-2"><a name="L-2"></a> <span class="kd">var</span> <span class="nx">formatted</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span> </span><span id="L-3"><a name="L-3"></a> <span class="k">for</span><span class="p">(</span><span class="nx">arg</span> <span class="k">in</span> <span class="nx">arguments</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-4"><a name="L-4"></a> <span class="nx">formatted</span> <span class="o">=</span> <span class="nx">formatted</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="s2">&quot;{&quot;</span> <span class="o">+</span> <span class="nx">arg</span> <span class="o">+</span> <span class="s2">&quot;}&quot;</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">[</span><span class="nx">arg</span><span class="p">]</span><span class="o">+</span><span class="s1">&#39;&#39;</span><span class="p">);</span> </span><span id="L-5"><a name="L-5"></a> <span class="p">}</span> </span><span id="L-6"><a name="L-6"></a> <span class="k">return</span> <span class="nx">formatted</span><span class="p">;</span> </span><span id="L-7"><a name="L-7"></a><span class="p">};</span> </span></pre></div> </td></tr></table>
format, javascript, string