删除字符串的最后一个字符
删除字符串的最后一个字符
var basic = "abc,def,ghi,";
1. 方法1:substr
basic = basic.substr(0, basic.length - 1);
2. 方法2:substring
basic = basic.substring(0, basic.length - 1);
3. 方法3:lastIndexOf
basic = basic.substring(0, basic.lastIndexOf(','));
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JavaScript算法