jQuery Writing textarea Input Word Limit Code

In this paper, we share the specific code of jQuery textarea input word limit for your reference. The specific contents are as follows

 // First judge whether the browser is evil or not IE
    var bind_name = 'input';// Default event 
    if (navigator.userAgent.indexOf("MSIE") != -1) {
      bind_name = 'propertychange';// Shameless IE Exclusive events 
    }
    var maxlength = 10;// Limit the number of input words 
    $('#Comment').bind(bind_name, function () {// To textarea Binding event 
      var strlen = $(this).val().replace(/[^\x00-\xff]/g, "aa").length;// Read the conversion to get the length, and convert Chinese into 2 Length, English spaces ignore calculation 1 Length of 
      $('#aviableCount').text(function () {//1 A span Show how long the input is now 
        if (Math.ceil(strlen / 2) > maxlength) {// Exceeds the limited length, only the maximum number is displayed 
          return maxlength;
        }
        else {
          return Math.ceil(strlen / 2);// Why divide by 2 Well, because the Chinese used to calculate two lengths, here we have to turn back. 0.5 Chinese length calculation of 1 Chinese length 
        }
      });
      if (strlen > maxlength * 2) {// If the input exceeds the maximum length, intercept it 
        for (i = 1; i > 0; i++) {
          $(this).val($(this).val().substr(0, $(this).val().length - 1));
          if ($(this).val().replace(/[^\x00-\xff]/g, "aa").length <= maxlength * 2) {
            break;
          }
        }
      }
    })
  </script>