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Whether is a number </ title></p>
<p></ hEAD></p>
<p><script language = "javaScript" type = "text / javascript"></p>
<p>Function isnum (O)</p>
<p>{</p>
<p>Var pattern = / ^ / d * $ /;</p>
<p>// Description: 2 / is the grammar of the positive value, / d is any number, is equivalent to [0-9], ^ means to begin with the number, $ indicates to end with the number. Chen Dehui</p>
<p>IF (! Pattern.Test (O.Value))</p>
<p>{alert ("must be a number!"); o.value = "";</p>
<p>}</p>
<p></ script></p>
<p><body></p>
<p><form name = "form1" method = "post" action = ">></p>
<p><input type = "text" name = "textfield" Onblur = "ISNUM (this)"></p>
<p><Input Type = "text" name = "textfield2"></p>
<p><Input Type = "Submit" name = "submit" value = "Submit"></p>
<p></ form></p>
<p></ body></p>
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jdiv.find('img, embed, iframe, video').each(function() {
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var img_height = this.org_height;
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jimg.width(jmessage_width);
jimg.css('height', 'auto');
jimg.css('cursor', 'pointer');
jimg.on('click', function() {
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jimg.width(jmessage_width);
var height = (img_height / img_width) * jimg.width();
jimg.height(height);
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$('div.message').each(function() {
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jdiv.find('table').addClass('table').wrap('<div class="table-responsive"></div>');
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