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JavaScript

Binding Functions in Javascript

var unboundSlice = Array.prototype.slice; 
// or [].slice;
var slice = Function.prototype.call.bind(unboundSlice);
 
function list() {
  return slice(arguments);
  // or [].slice.call(arguments) or Array.prototype.slice.call(arguments)
}
 
var list1 = list(1, 2, 3); // [1, 2, 3]
https://snipt.net/embed/b57c200c2c99056fec16e42d2dc10251/
/raw/b57c200c2c99056fec16e42d2dc10251/
b57c200c2c99056fec16e42d2dc10251
js
JavaScript
10
2019-05-25T10:09:21
True
False
False
Oct 08, 2012 at 01:29 PM
/api/public/snipt/48250/
binding-functions-in-javascript
<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> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="kd">var</span> <span class="nx">unboundSlice</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">slice</span><span class="p">;</span> </span><span id="L-2"><a name="L-2"></a><span class="c1">// or [].slice;</span> </span><span id="L-3"><a name="L-3"></a><span class="kd">var</span> <span class="nx">slice</span> <span class="o">=</span> <span class="nb">Function</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">call</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">unboundSlice</span><span class="p">);</span> </span><span id="L-4"><a name="L-4"></a> </span><span id="L-5"><a name="L-5"></a><span class="kd">function</span> <span class="nx">list</span><span class="p">()</span> <span class="p">{</span> </span><span id="L-6"><a name="L-6"></a> <span class="k">return</span> <span class="nx">slice</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span> </span><span id="L-7"><a name="L-7"></a> <span class="c1">// or [].slice.call(arguments) or Array.prototype.slice.call(arguments)</span> </span><span id="L-8"><a name="L-8"></a><span class="p">}</span> </span><span id="L-9"><a name="L-9"></a> </span><span id="L-10"><a name="L-10"></a><span class="kd">var</span> <span class="nx">list1</span> <span class="o">=</span> <span class="nx">list</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">);</span> <span class="c1">// [1, 2, 3]</span> </span></pre></div> </td></tr></table>
Bind, Function, Javascript