jquery自定义函数

/**
*jquery 的拓展方法
*/
/**
* 给btn 添加去除disabled
*/
$.fn.disabled = function() {
  $(this).each(function(index,em){
  var _this = $(em);
  if(_this.is('button')||_this.is('input[type="button"]')){
    _this.prop('disabled','disabled');
    _this.css('cursor','not-allowed');
    _this.removeClass('u-btnBlue');
    _this.css({'background': '#1f5183','color': '#fff'});
  }else if (_this.is('input')) {
    _this.prop('disabled','disabled');
  }else if (_this.is('.u-btn')) {
    _this.addClass('u-btnDisable');
    var _width = _this.outerWidth();
    var _height = _this.outerHeight();
    var _zIndex = _this.css("z-index");
    console.log(parseFloat(_zIndex));
    _this.css('position','relative');
    var mark = $("<div class='mark'></div>").css({"z-index":_zIndex+1,"background-color":"transparent"});
    _this.append(mark);
    mark.click(function(){
    return false;
    });
  };
});
};

/**
* 格式化后转number字符串
* @param {Object} symbol 货币标识
* @param {Object} thousand 分隔符
* @param {Object} decimal 小数点符号
*/
String.prototype.formatMoneyToNumber = function(symbol, thousand, decimal) {
  var string = this;
  string = string || '0';
  symbol = symbol || "";
  symbol = symbol !== undefined ? symbol : "";
  thousand = thousand || ",";
  decimal = decimal || ".";
  return string.replace(symbol, '').replace(new RegExp(thousand,"g"), '').replace(decimal, '.');
};

Number.prototype.formatMoney = function(places, symbol, thousand, decimal) {
  places = places || 0;
  places = !isNaN( places = Math.abs(places)) ? places : 2;
  symbol = symbol !== undefined ? symbol : "";
  thousand = thousand || ",";
  decimal = decimal || ".";
  var number = this,negative = number < 0 ? "-" : "", i = parseInt( number = Math.abs(+number || 0).toFixed(places), 10) + "", j = ( j = i.length) >     3 ? j % 3 : 0;
  number = symbol + negative + ( j ? i.substr(0, j) + thousand : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + thousand) + ( places ? decimal +   Math.abs(number - i).toFixed(places).slice(2) : "");
  return number == 0?0:number;
};

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