javascript - 如何每五个单词用一个新行分解一个 javascript 字符串？

Question

我有一个不寻常的要求。给定如下字符串：

var a = "This is a sentance that has many words. I would like to split this to a few lines"

我需要每五个单词插入一个“\n”。字符串 a 可以包含任意数量的字母数字字符。

有人可以给我一个想法，我该怎么做？

Answer 1

a.split(/((?:\w+ ){5})/g).filter(Boolean).join("\n");
/*
    This is a sentance that 
    has many words. 
    I would like to split 
    this to a few lines
*/

Answer 2

想法首先出现在我的脑海中

    var a = "This is a sentance that has many words. I would like to split this to a few lines";
a=a.split(" ");var str='';
for(var i=0;i<a.length;i++)
{
if((i+1)%5==0)str+='\n';
str+=" "+a[i];}
alert(str);

Answer 3

您可以将字符串拆分为几个单词并将它们连接在一起，同时每 5 个单词添加一个“\n”：

function insertLines (a) {
    var a_split = a.split(" ");
    var res = "";
    for(var i = 0; i < a_split.length; i++) {
        res += a_split[i] + " ";
        if ((i+1) % 5 === 0)
            res += "\n";
    }
    return res;
}

//call it like this
var new_txt = insertLines("This is a sentance that has many words. I would like to split this to a few lines");

请注意 html 代码中的“\n”（例如在“div”或“p”标签中）对网站的访问者是不可见的。在这种情况下，您需要使用“<br/>”

Answer 4

尝试：

var a = "This is a sentance that has many words. I would like to split this to a few lines"
var b="";
var c=0;
for(var i=0;i<a.length;i++) {
    b+=a[i];
    if(a[i]==" ") {
        c++;
        if(c==5) {
            b+="\n";
            c=0;
        }
    }
}
alert(b);