Javascript 拆分差异

Question

Javascript

var sitename="Welcome to JavaScript Kit"
var words=sitename.split(" ") //split using blank space as delimiter
for (var i=0; i<words.length; i++)
alert(words[i]) 
//4 alerts: "Welcome", "to", "JavaScript", and "Kit"

还有

var sitename="Welcome to JavaScript Kit"
var words=sitename.split("") //split using blank space as delimiter
for (var i=0; i<words.length; i++)
alert(words[i]) 
//6 alerts: "W", "e", "l", "c","o","m"

有什么区别

var words=sitename.split(" ");

还有

var words=sitename.split("");

这里，两次分割之间有什么区别。

Answer 1

var sitename="Welcome to JavaScript Kit"
var words=sitename.split("") //split using blank space as delimiter
for (var i=0; i<words.length; i++)
alert(words[i]) 
//6 alerts: "W", "e", "l", "c","o","m"

它不会仅在 m 处停止，之后还会有更多警报。

每个单词都会被提醒，直到“K”“I”“T”http://jsfiddle.net/zwJJN/

var words=sitename.split("") //split using blank space as delimiter    

var words=sitename.split(" ") //split using white space space as delimiter

当我们使用 split 时，将搜索整个字符串以查找给定的分隔符，并在此基础上进行拆分

var Words=sitename.split("")//每个字符都被分割。

var words=sitename.split(" ")// every words is splitted having white space before it.