demo小样

1.去除字符串中的空格

1 <div class="show-demo">
2   <input class="input" />
3   <pre class="pre"></pre>
4   <button class="button">√</button>
5 </div>

1   $('.input').keydown(function () {
2     var v = $('.input').val();
3     console.log(v);
4     //TODO: trim
5     v = v.replace(/\s/g, '');
6     $('.pre').text(v);
7   })

 

转载于:https://www.cnblogs.com/margarita/p/5443227.html