js数组操作

var arrteacher = new Array();var arrstu = new Array();var arrparent = new Array();var arrrole = new Array();//获取选中的角色function addrole( role_id ) {if(! (arrrole.indexOf(role_id)>-1) ) {arrrole.push(role_id);}}//索引查询到要删除的元素Array.prototype.removeByValue = function(id) {var id = parseInt( id );for(var i=0; i<this.length; i++) {if(this[i] == id) {this.splice(i, 1);break;}}}//删除单页的用户数组里的数据function delDataToArray( id,type ) {if ( type == 2) {arrteacher.removeByValue(id);}else if ( type == 3) {arrstu.removeByValue(id);} else {arrparent.removeByValue(id);}}