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Strip non-numeric characters from field on form submit

// Found a function to strip non-numeric chars on the web, I combined this with some jQuery magic.

// stripNonNumeric function found here:
// http://javascript.internet.com/forms/number-formatting.html

function stripNonNumeric( str ){
  str += '';
  var rgx = /^\d|\.|-$/;
  var out = '';
  for( var i = 0; i < str.length; i++ ){
    if( rgx.test( str.charAt(i) ) ){
      if( !( ( str.charAt(i) == '.' && out.indexOf( '.' ) != -1 ) ||
             ( str.charAt(i) == '-' && out.length != 0 ) ) ){
        out += str.charAt(i);
      }
    }
  }
  return out;
}


// a little jQuery Magic

$(function() {
	$("#formID").submit(function(){
		$(".className").each(
			function() {
				$(this).val(stripNonNumeric( $(this).val() ));
			});
	});
})
https://snipt.net/embed/e28120edc59444a38b67e209ed76133b/
/raw/e28120edc59444a38b67e209ed76133b/
e28120edc59444a38b67e209ed76133b
js
JavaScript
31
2019-05-23T03:57:45
True
False
False
/api/public/snipt/14514/
strip-non-numeric-characters-on-submit
<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> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a> <a href="#L-24">24</a> <a href="#L-25">25</a> <a href="#L-26">26</a> <a href="#L-27">27</a> <a href="#L-28">28</a> <a href="#L-29">29</a> <a href="#L-30">30</a> <a href="#L-31">31</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="c1">// Found a function to strip non-numeric chars on the web, I combined this with some jQuery magic.</span> </span><span id="L-2"><a name="L-2"></a> </span><span id="L-3"><a name="L-3"></a><span class="c1">// stripNonNumeric function found here:</span> </span><span id="L-4"><a name="L-4"></a><span class="c1">// http://javascript.internet.com/forms/number-formatting.html</span> </span><span id="L-5"><a name="L-5"></a> </span><span id="L-6"><a name="L-6"></a><span class="kd">function</span> <span class="nx">stripNonNumeric</span><span class="p">(</span> <span class="nx">str</span> <span class="p">){</span> </span><span id="L-7"><a name="L-7"></a> <span class="nx">str</span> <span class="o">+=</span> <span class="s1">&#39;&#39;</span><span class="p">;</span> </span><span id="L-8"><a name="L-8"></a> <span class="kd">var</span> <span class="nx">rgx</span> <span class="o">=</span> <span class="sr">/^\d|\.|-$/</span><span class="p">;</span> </span><span id="L-9"><a name="L-9"></a> <span class="kd">var</span> <span class="nx">out</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span><span class="p">;</span> </span><span id="L-10"><a name="L-10"></a> <span class="k">for</span><span class="p">(</span> <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span> <span class="p">){</span> </span><span id="L-11"><a name="L-11"></a> <span class="k">if</span><span class="p">(</span> <span class="nx">rgx</span><span class="p">.</span><span class="nx">test</span><span class="p">(</span> <span class="nx">str</span><span class="p">.</span><span class="nx">charAt</span><span class="p">(</span><span class="nx">i</span><span class="p">)</span> <span class="p">)</span> <span class="p">){</span> </span><span id="L-12"><a name="L-12"></a> <span class="k">if</span><span class="p">(</span> <span class="o">!</span><span class="p">(</span> <span class="p">(</span> <span class="nx">str</span><span class="p">.</span><span class="nx">charAt</span><span class="p">(</span><span class="nx">i</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;.&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">out</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span> <span class="s1">&#39;.&#39;</span> <span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span> <span class="p">)</span> <span class="o">||</span> </span><span id="L-13"><a name="L-13"></a> <span class="p">(</span> <span class="nx">str</span><span class="p">.</span><span class="nx">charAt</span><span class="p">(</span><span class="nx">i</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;-&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">out</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="mi">0</span> <span class="p">)</span> <span class="p">)</span> <span class="p">){</span> </span><span id="L-14"><a name="L-14"></a> <span class="nx">out</span> <span class="o">+=</span> <span class="nx">str</span><span class="p">.</span><span class="nx">charAt</span><span class="p">(</span><span class="nx">i</span><span class="p">);</span> </span><span id="L-15"><a name="L-15"></a> <span class="p">}</span> </span><span id="L-16"><a name="L-16"></a> <span class="p">}</span> </span><span id="L-17"><a name="L-17"></a> <span class="p">}</span> </span><span id="L-18"><a name="L-18"></a> <span class="k">return</span> <span class="nx">out</span><span class="p">;</span> </span><span id="L-19"><a name="L-19"></a><span class="p">}</span> </span><span id="L-20"><a name="L-20"></a> </span><span id="L-21"><a name="L-21"></a> </span><span id="L-22"><a name="L-22"></a><span class="c1">// a little jQuery Magic</span> </span><span id="L-23"><a name="L-23"></a> </span><span id="L-24"><a name="L-24"></a><span class="nx">$</span><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span> </span><span id="L-25"><a name="L-25"></a> <span class="nx">$</span><span class="p">(</span><span class="s2">&quot;#formID&quot;</span><span class="p">).</span><span class="nx">submit</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> </span><span id="L-26"><a name="L-26"></a> <span class="nx">$</span><span class="p">(</span><span class="s2">&quot;.className&quot;</span><span class="p">).</span><span class="nx">each</span><span class="p">(</span> </span><span id="L-27"><a name="L-27"></a> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span> </span><span id="L-28"><a name="L-28"></a> <span class="nx">$</span><span class="p">(</span><span class="k">this</span><span class="p">).</span><span class="nx">val</span><span class="p">(</span><span class="nx">stripNonNumeric</span><span class="p">(</span> <span class="nx">$</span><span class="p">(</span><span class="k">this</span><span class="p">).</span><span class="nx">val</span><span class="p">()</span> <span class="p">));</span> </span><span id="L-29"><a name="L-29"></a> <span class="p">});</span> </span><span id="L-30"><a name="L-30"></a> <span class="p">});</span> </span><span id="L-31"><a name="L-31"></a><span class="p">})</span> </span></pre></div> </td></tr></table>
jquery, numbers