jquery-trim.js

是个关于网格编程的程序

String.prototype.mylength = function(){
  var arr = this.match(/[\u00FF-\uFFFF]/gi);
  if(!arr || arr==null)
      return this.length;
  var len = this.length + arr.length;
  return len;
}

String.prototype.mysubstring = function(limit){
  var len = 0;
  var arr = [];
  for(var i=0;i<this.length;i++){
    var it = this.substring(i,i+1);
    len += it.mylength();
    if(len > limit)
        break;
    arr[arr.length] = it;
  }

  var result = arr.join("");
  return result;
}

jQuery.fn.limit = function(){
  $(this).each(function(){
     
    var mylimit = parseInt($(this).attr("limit"));
    var applied = $(this).attr("applied");
    if(applied)
        return;
    var text = $(this).text();
    var original_text = text;
    if(text.mylength() > mylimit){
      text = text.mysubstring(mylimit);
      text += "...";
      //text = "<SPAN style=\"position:relative\"><SPAN class='tooltip'>" + original_text + "</SPAN>" + text + "</SPAN>";
      $(this).html(text);
      /*$(this).mouseover(function(){
            $(this).find(".tooltip").css("display","");
          });
      $(this).mouseout(function(){
            $(this).find(".tooltip").css("display","none");
          });
      $(this).find(".tooltip")
          .css({ 'display':'block',
                 'position':'absolute',
                 'top':'2em',
                 'left':'2em',
                 'width':'15em',
                 'border':'1px solid #0cf',
                 'background-color':'#cff',
                 'color':'#000',
                 'text-align':'center',
                 'word-wrap':'break-word',
                 'word-break':'break-all'})
          .css("display","none");
	  */
      $(this).attr("applied",true);
    }
   
  });
}

function apply_limit(){
  $("[@limit]").limit();
}

$(document).ready(apply_limit);