用'+'[复制]替换字符串中的所有空格

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• How to replace all occurrences of a string in JavaScript? 41 answers
• 如何在JavaScript中替换字符串的所有出现?41岁的答案

I have a string that contains multiple spaces. I want to replace these with a plus symbol. I thought I could use

我有一个包含多个空格的字符串。我想用一个加号来替换它们。我想我可以用。

var str = 'a b c';
var replaced = str.replace(' ', '+');

but it only replaces the first occurrence. How can I get it replace all occurrences?

但它只取代了第一次出现。我怎样才能让它取代所有的事件呢?

9 个解决方案

#1

Here's an alternative that doesn't require regex:

这里有一个不需要regex的替代方案:

var str = 'a b c';
var replaced = str.split(' ').join('+');

#2

You need the /g (global) option, like this:

您需要/g(全局)选项，如下所示:

var replaced = str.replace(/ /g, '+');

You can give it a try here. Unlike most other languages, JavaScript, by default, only replaces the first occurrence.

你可以在这里试一试。与大多数其他语言不同，JavaScript在默认情况下只替代第一次出现。

#3

var str = 'a b c';
var replaced = str.replace(/\s/g, '+');

#4

You can also do it like

你也可以这样做。

str = str.replace(/\s/g, "+");

Have a look to the fiddle: http://jsfiddle.net/aC5ZW/

看一下小提琴:http://jsfiddle.net/aC5ZW/ ?

#5

Use global search in the string. g flag

在字符串中使用全局搜索。g标志

str.replace(/\s+/g, '+');

source: replaceAll function

来源:replaceAll函数

#6

Use a regular expression with the g modifier:

使用正则表达式与g修饰符:

var replaced = str.replace(/ /g, '+');

From Using Regular Expressions with JavaScript and ActionScript:

使用JavaScript和ActionScript的正则表达式:

/g enables "global" matching. When using the replace() method, specify this modifier to replace all matches, rather than only the first one.

/ g使“全球化”匹配。在使用replace()方法时，指定这个修改器来替换所有匹配项，而不是仅替换第一个匹配项。

#7

You need to look for some replaceAll option

你需要找一些替代品。

str = str.replace(/ /g, "+");

this is a regular expression way of doing a replaceAll.

这是一个正则表达式方法来替换所有元素。

function ReplaceAll(Source, stringToFind, stringToReplace) {
    var temp = Source;
    var index = temp.indexOf(stringToFind);

    while (index != -1) {
        temp = temp.replace(stringToFind, stringToReplace);
        index = temp.indexOf(stringToFind);
    }

    return temp;
}

String.prototype.ReplaceAll = function (stringToFind, stringToReplace) {
    var temp = this;
    var index = temp.indexOf(stringToFind);

    while (index != -1) {
        temp = temp.replace(stringToFind, stringToReplace);
        index = temp.indexOf(stringToFind);
    }

    return temp;

};

#8

NON BREAKING SPACE ISSUE

In some browsers

在某些浏览器

(MSIE "as usually" ;-))

(MSIE“通常”;-))

replacing space in string ignores the non-breaking space (the 160 char code).

在字符串中替换空格会忽略不破坏的空间(160字符代码)。

One should always replace like this:

人们应该经常这样替换:

myString.replace(/[ \u00A0]/, myReplaceString)

Very nice detailed explanation:

很好的详细解释:

http://www.adamkoch.com/2009/07/25/white-space-and-character-160/

http://www.adamkoch.com/2009/07/25/white-space-and-character-160/

#9

Do this recursively:

递归地这样做:

public String replaceSpace(String s){
    if (s.length() < 2) {
        if(s.equals(" "))
            return "+";
        else
            return s;
    }
    if (s.charAt(0) == ' ')
        return "+" + replaceSpace(s.substring(1));
    else
        return s.substring(0, 1) + replaceSpace(s.substring(1));
}