获取html页面传递过来的参数

var pageObj={};

var url = decodeURI(location.search); //获取url中"?"符后的字串 ('?modFlag=business&role=1')
    if ( url.indexOf( "?" ) != -1 ) {
      var str = url.substr( 1 ); //substr()方法返回从参数值开始到结束的字符串；
      var strs = str.split( "&" );
      for ( var i = 0; i < strs.length; i++ ) {
          pageObj[ strs[ i ].split( "=" )[ 0 ] ] = ( strs[ i ].split( "=" )[ 1 ] );
      }
    }