function aa() { //获取输入框中的数字 var getStr = document.getElementById("textarea").value; var toArr = new Array(); var toArr2 = new Array(); //分割为单个数字 toArr = getStr.split(","); //将分割后的数字转换类型为Number for (var i = 0; i < toArr.length; i++ ){ var toNum = parseInt(toArr[i]); toArr2[i] = toNum; }; //冒泡排序 var temp = 0; for (var i = 0; i < toArr2.length; i++){ for (var j = 0; j < toArr2.length - i; j++){ if (toArr2[j] > toArr2[j + 1]){ temp = toArr2[j + 1]; toArr2[j + 1] = toArr2[j]; toArr2[j] = temp; } } } //toArr2 是排好顺序的数组 alert(toArr2) }