js对象转string的函数 function obj2str(o){ var r = []; if(typeof o =="string") return """+o.replace(/(['"\])/g,"\$1").replace(/(n)/g,"\n").replace(/(r)/g,"\r").replace(/(t)/g,"\t")+""…
join()函数的功能为:把数组的所有元素放入一个字符串,元素通过指定的分隔符分隔. 设置这样的数组操作 var a = []; a.push(1);a.push(3.1415926);a.push("number");a.push("a"); console.log(a.length); var b = a.join("-"); var c = a.join(","); console.log(a);console.log(…
def join(self, iterable): # real signature unknown; restored from __doc__ """ S.join(iterable) -> str Return a string which is the concatenation of the strings in the iterable. The separator between elements is S. """ 上面是库…
String.Join大大的方便了我们拼接字符串的处理. 1.普通用法:指定元素间的拼接符号 var ids = new List<int>(); for (int i = 0; i < 10; i++) { ids.Add(i); } var inids = string.Join(",", ids); 输出结果:0,1,2,3,4,5,6,7,8,9 2.特殊场景:在元素上添加符号,例如:一个字符串的数组要作为DB脚本的in的条件,需要加单引号,看看我是怎么做的…