Javascript 从javascript中的变量中删除起始和结束逗号
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remove starting and ending comma from variable in javascript
提问by Amit
i have the below variable in javascript. i want to remove the starting and ending "comma" sign using jquery/javascript
我在javascript中有以下变量。我想使用 jquery/javascript 删除开始和结束的“逗号”符号
var test=",1,2,3,4," <---
Expected output: var test="1,2,3,4"
please advice
请指教
回答by Gabriele Petrioli
Regex should help
正则表达式应该有帮助
var edited = test.replace(/^,|,$/g,'');
^,matches the comma at the start of the string and ,$matches the comma at the end ..
^,匹配字符串开头,$的逗号并匹配结尾的逗号 ..
回答by Ankit
Below code sample will do this
下面的代码示例将执行此操作
var str = ",1,2,3,4,5,6,7,8,9,";
str = str.substring(1,str.lastIndexOf(","));
回答by Josh Leitzel
test.substring(1, test.length - 1);should do it for you.
test.substring(1, test.length - 1);应该为你做。
回答by barcrab
Even easier
更轻松
var result = test.slice(1,-1);
