参考:http://stackoverflow.com/questions/21537543/how-to-split-a-string-by-node-js
var arr = str.toString().split(",");
检测变量是否为字符串string:
var arr; if (typeof str[0] == 'string') { arr = str[0].split(',') } else { arr = []; }
结合map的用法。参考:http://stackoverflow.com/questions/21537543/how-to-split-a-string-by-node-js
分割字符串后,对每个元素加1
var str = "123, 124, 234,252"; var arr = str.split(",").map(function (val) { return Number(val) + 1; }); document.write(JSON.stringify(arr));