js字符串函数之split()join()
split方法用于把一个字符串切割成字符串数组,与join相反
一个参数表示以该参数为切割点,
1 var str="silence‘s world"; 2 console.log(str.split(" "));// ["silence‘s", "world"] 3 console.log(str.split("‘"));// ["silence", "s world"] 4 console.log(str.split(""));//["s", "i", "l", "e", "n", "c", "e", "‘", "s", " ", "w", "o", "r", "l", "d"] 5 //两个参数时,后一个参数表示长度 6 console.log(str.split("‘",1));// ["silence"] 7 console.log(str.split("",5));// ["s", "i", "l", "e", "n"]
join方法用于将数组连接成字符串
1 var arr=["s","i","l","e","n","c","e"] 2 console.log(arr.join(","));//s,i,l,e,n,c,e 3 console.log(arr.join(""));//silence 4 console.log(arr.join("."));//s.i.l.e.n.c.e 5 console.log(arr.join("|"));//s|i|l|e|n|c|e
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