对于逗号分隔字符串的字符串数组：

let months = ["January","Feb"];
let monthsString = months.join(", ");

嗯，拆分是危险的，因为字符串总是可以包含逗号。注意以下事项：

var myArr = "a,b,c,d,e,f,g,','";
result = myArr.split(',');

那么你会怎么解释呢？你希望结果是什么？具有以下内容的数组：

['a', 'b', 'c', 'd', 'e', 'f', 'g', '\'', '\''] or
['a', 'b', 'c', 'd', 'e', 'f', 'g', ',']

即使你逃避逗号，你也会有问题。

我很快就把这件事弄混了：

(function($) {
    $.extend({
        splitAttrString: function(theStr) {
            var attrs = [];

            var RefString = function(s) {
                this.value = s;
            };
            RefString.prototype.toString = function() {
                return this.value;
            };
            RefString.prototype.charAt = String.prototype.charAt;
            var data = new RefString(theStr);

            var getBlock = function(endChr, restString) {
                var block = '';
                var currChr = '';
                while ((currChr != endChr) && (restString.value !== '')) {
                    if (/'|"/.test(currChr)) {
                        block = $.trim(block) + getBlock(currChr, restString);
                    }
                    else if (/\{/.test(currChr)) {
                        block = $.trim(block) + getBlock('}', restString);
                    }
                    else if (/\[/.test(currChr)) {
                        block = $.trim(block) + getBlock(']', restString);
                    }
                    else {
                        block += currChr;
                    }
                    currChr = restString.charAt(0);
                    restString.value = restString.value.slice(1);
                }
                return $.trim(block);
            };

            do {
                var attr = getBlock(',', data);
                attrs.push(attr);
            }
            while (data.value !== '')
                ;
            return attrs;
        }
    });
})(jQuery);

最短的

str.split`,`

var str=“一月、二月、三月、四月、五月、六月、七月、八月、九月、十月、十一月、十二月”；让arr=str.split`，`；控制台日志（arr）；

对于逗号分隔字符串的字符串数组：

let months = ["January","Feb"];
let monthsString = months.join(", ");

var array = string.split(',');

MDN引用，对于极限参数的可能意外行为非常有用。（提示：“a，b，c”.split（“，”，2）指向[“a”，“b”]，而不是[“a，”b，c“]。）

let str = "January,February,March,April,May,June,July,August,September,October,November,December"

let arr = str.split(',');

这将导致：

["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]

如果要将以下内容转换为：

["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]

这：

"January,February,March,April,May,June,July,August,September,October,November,December";

use:

str = arr.join(',')