Javascript 如何删除字符串中的重复空格？
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How to remove duplicate white spaces in a string?
提问by Lakshmitha
Possible Duplicate:
Removing whitespace from string in JavaScript
可能的重复：
从 JavaScript 中的字符串中删除空格
I have used trim function to remove the white spaces at the beginning and end of the sentences. If there is to much white spaces in between words in a sentence, is there any method to trim?
我已经使用修剪功能去除了句子开头和结尾的空格。如果句子中的单词之间有很多空格，有什么方法可以修剪吗？
for example
例如
"abc def. fds sdff."
回答by KooiInc
try
尝试
"abc def. fds sdff."
.replace(/\s+/g,' ')
or
或者
"abc def. fds sdff."
.split(/\s+/)
.join(' ');
or use this allTrimString extension
或使用此allTrim字符串扩展名
String.prototype.allTrim = String.prototype.allTrim ||
function(){
return this.replace(/\s+/g,' ')
.replace(/^\s+|\s+$/,'');
};
//usage:
alert(' too much whitespace here right? '.allTrim());
//=> "too much whitespace here right?"
回答by Shef
var str = 'asdads adasd adsd';
str = str.replace(/\s+/g, ' ');
回答by jfriend00
You can trim multiple consecutive spaces down to only one space with this Javascript:
您可以使用此 Javascript 将多个连续空格修剪为仅一个空格：
var str = "abc def. fds sdff.";
str = str.replace(/\s+/g, " ");
If you meant something other than multiple consecutive spaces, then please clarify in your question what you meant.
如果您的意思不是多个连续空格，那么请在您的问题中澄清您的意思。
回答by Ehryk
I think what you're looking for is JavaScript's string.replace() method.
我认为您正在寻找的是 JavaScript 的 string.replace() 方法。
If you want all whitespace removed, use this:
如果要删除所有空格，请使用以下命令：
"abc def. fds sdff.".replace(/\s/g, '');
Returns: "abcdef.fdssdff."
If you want only double-spaces removed, use:
如果您只想删除双空格，请使用：
"abc def. fds sdff.".replace(/\s\s/g, ' ');
Returns: "abc def. fds sdff."
If you want the space left after a period, use:
如果您想在一段时间后留下空间，请使用：
"abc def. fds sdff.".replace(/[^.]\s/g, '')
Returns: "abcdef. fdssdff."
回答by samn
value.replace(" ", " ");
This should do the trick, it just replaces 2 white spaces to one, until you get only 1 white space.
这应该可以解决问题，它只是将 2 个空格替换为 1，直到您只得到 1 个空格。
回答by Sai Kalyan Kumar Akshinthala
Refer to the following code part which used rejex in javascript to remove duplicate white spaces.
请参阅以下代码部分，该部分在 javascript 中使用 rejex 删除重复的空格。
function trim(value) {
var temp = value;
var obj = /^(\s*)([\W\w]*)(\b\s*$)/;
if (obj.test(temp)) { temp = temp.replace(obj, ''); }
var obj = / +/g;
temp = temp.replace(obj, " ");
if (temp == " ") { temp = ""; }
return temp;
}
