textarea文本禁止空格换行

空格：

onkeyup="this.value=this.value.replace(/^ +| +$/g,'')"

换行：

?

1 2 3 4 5 6 7 8 9 10 11 12 13

ng-keydown="ctrl.checkEnter(event)"   vm.checkEnter = function(e){         var et = e || window.event;         var keycode = et.charCode || et.keyCode;         if (keycode == 13) {             if (window.event) {                 window.event.returnValue = false;             } else {                 e.preventDefault(); //for firefox             }         }     };