Javascript javascript中的RTrim
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RTrim in javascript
提问by Nate Pet
I am having a problem with jQuery's trim. I have a string such at in jQuery:
我在使用 jQuery 的修剪时遇到了问题。我在 jQuery 中有一个字符串：
var string1;
string1 = "one~two~";
How do I trim the trailing tilde?
如何修剪尾随波浪号？
回答by Gabriele Petrioli
The .trim()method of jQuery refers to whitespace ..
.trim()jQuery的方法是指空格..
Description: Remove the whitespace from the beginning and end of a string.
描述：删除字符串开头和结尾的空格。
You need
你需要
string1.replace(/~+$/,'');
This will remove all trailing ~.
这将删除所有尾随~.
So one~two~~~~~would also become one~two
所以one~two~~~~~也会变成one~two
回答by Konerak
Just use the javascript replace to change the last string into nothing:
只需使用 javascript 替换将最后一个字符串更改为空：
string1.replace(/~+$/g,"");
回答by Javid
IMO this is the best way to do a right/left trim and therefore, having a full functionality for trimming (since javascript supports string.trimnatively)
IMO 这是进行右/左修剪的最佳方式，因此具有完整的修剪功能（因为 javascriptstring.trim本身支持）
String.prototype.rtrim = function (s) {
if (s == undefined)
s = '\s';
return this.replace(new RegExp("[" + s + "]*$"), '');
};
String.prototype.ltrim = function (s) {
if (s == undefined)
s = '\s';
return this.replace(new RegExp("^[" + s + "]*"), '');
};
Usage example:
用法示例：
var str1 = ' jav ~'
var r1 = mystring.rtrim('~'); // result = ' jav ' <= what OP is requesting
var r2 = mystring.rtrim(' ~'); // result = ' jav'
var r3 = mystring.ltrim(); // result = 'jav ~'
P.S.If you are specifying a parameter for rtrimor ltrim, make sure you use a regex-compatible string. For example if you want to do a rtrimby [, you should use: somestring.rtrim('\\[')If you don't want to escape the string manually, you can do it using a regex-escape function if you will. See the answer here.
PS如果您为rtrimor指定参数ltrim，请确保使用与正则表达式兼容的字符串。例如，如果您想执行rtrimby [，则应使用：somestring.rtrim('\\[')如果您不想手动转义字符串，则可以使用 regex-escape 函数（如果愿意）。请参阅此处的答案。
回答by Silvertiger
One option:
一种选择：
string1 = string1.substring(0,(string1.length-1));
long way around it .. and it jsut strips the last character .. not the tilde specifically..
绕着它走了很长一段路..它只是去掉了最后一个字符..不是特别的波浪号..
回答by Nick
var myStr = "One~Two~Three~Four~"
var strLen = myStr.length;
myStr = myStr.slice(0,strLen-1);
alert (myStr);
This will delete the last character in the string. Is that what you wanted?
这将删除字符串中的最后一个字符。那是你想要的吗？
回答by karim79
string1 = string1.substring(0, string1.length - 1);
https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/substring
https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/substring
回答by ShankarSangoli
You can use substringjavascript method.
您可以使用substringjavascript 方法。
Try this
尝试这个
var string1 = "one~two~";
string1 = $.trim(string1).substring(0, string1.length -1);
