Question

我有字符串"11/21/2018 11/27/2018 Thanksgiving Break"，想从中截取两个日期，并且只检索两个日期（11/21/2018和（11/27/2018）以及某种形式的标题数组。

Answer 1

您可以在匹配这样的组时匹配日期和其他所有内容：

const str = "11/21/2018 11/27/2018 Thanksgiving Break";
const ans = [];

str.replace(/(\d{2}\/\d{2}\/\d{4}) |(.+$)/g, (_, date, text) => {
    ans.push(date || text);
});

console.log(ans);

您可以在此处查看正则表达式组的匹配方式：https://regex101.com/r/IXW6Hv/1

Answer 2

您可以使用split方法。

    let str = "11/21/2018 11/27/2018 Thanksgiving Break"
    let endOfFirstDate = str.indexOf(" ")
    let firstDate = str.substring(0, endOfFirstDate).trim()
    let endOfSecondDate = str.indexOf(" ", endOfFirstDate + 1)
    let secondDate = str.substring(endOfFirstDate, endOfSecondDate).trim()
    let title = str.substring(endOfSecondDate, str.length).trim()

Answer 3

通常使用正则表达式来完成此操作：

const text = "11/21/2018 11/27/2018 Thanksgiving Break";

console.log(text.match(/([0-9\/]+\s){2}(.+)/)[2])

一种更基本的方法是将字符串拆分为单词，删除前两个，然后再次加入：

const text = "11/21/2018 11/27/2018 Thanksgiving Break";

console.log(text.split(" ").splice(2).join(" "))

Answer 4

我最简单的方式...

var
    Txt    = "11/21/2018 11/27/2018 Thanksgiving Break",
    pos_1  = Txt.indexOf(' '),
    date_1 = Txt.substring(0, pos_1),
    pos_2  = Txt.indexOf(' ',++pos_1),
    date_2 = Txt.substring(pos_1, pos_2),
    msg    = Txt.substring(++pos_2);

console.log('__'+ date_1 + '__' +date_2 + '__'+ msg+'__' );

Answer 5

if your date is always dd/mm/yyyy style, you can try this one to test it.

let str = "11/21/2018 11/27/2018 Thanksgiving Break"
let tmp = str;
tmp = tmp.replace(/[\d]+\/[\d]+\/[\d]+/g," ")
let arr = tmp.split(" ");
for(const item of arr){
	if(item){
		str = str.replace(item," ");
	}
}
for(const item of str.split(" ")){
	if(item){
		console.log(item);
	}
}

if all your data are separate by space, you can try a simple one like below:

let str = "11/21/2018 11/27/2018 Thanksgiving Break"
let arr = str.split(" ");
for(const item of arr){
	if(/[\d]+\/[\d]+\/[\d]+/.test(item)){
		console.log(item);
	}
}

如何在Javascript中的日期之后分割字符串？

5 个答案: