用 和 在 jQuery /JavaScript 中替换 , 的最后一个索引
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Replace last index of , with and in jQuery /JavaScript
提问by Tushar Gupta - curioustushar
i want to replace the last index of comma (,)in string with and.
我想将,字符串中逗号 ( )的最后一个索引替换为and.
eg . a,b,cwith 'a,b and c'
例如。a,b,c和'a,b and c'
eg q,w,ewith q,w and e
例如 q,w,e与q,w and e
回答by Tushar Gupta - curioustushar
lastIndexOffinds the last index of the parameter string passed in it.
lastIndexOf查找传入的参数字符串的最后一个索引。
var x = 'a,b,c';
var pos = x.lastIndexOf(',');
x = x.substring(0,pos)+' and '+x.substring(pos+1);
console.log(x);
you can also use this function
你也可以使用这个功能
function replace_last_comma_with_and(x) {
var pos = x.lastIndexOf(',');
return x.substring(0, pos) + ' and ' + x.substring(pos + 1);
}
console.log(replace_last_comma_with_and('a,b,c,d'));
回答by mohkhan
This regex should do the job
这个正则表达式应该可以完成这项工作
"a,b,c,d".replace(/(.*),(.*)$/, " and ")
回答by Anand
Try the following
尝试以下
var x= 'a,b,c,d';
x = x.replace(/,([^,]*)$/, " and ");
回答by Neeraj Dubey
Try
尝试
var str = 'a,b,c', replacement = ' and ';
str = str.replace(/,([^,]*)$/,replacement+'');
alert(str)
回答by Alok Agarwal
A simple loop will help you out
一个简单的循环会帮助你
first find the index of all , in your string using,
首先找到所有的索引，在你的字符串中使用，
var str = "a,b,c,d,e";
var indices = [];
for(var i=0; i<str.length;i++) {
if (str[i] === ",") indices.push(i);
}
indices = [1,3,5,7] as it start from 0
len = indices.length()
str[indices[len - 1]] = '.'
This will solve your purpose.
这将解决您的目的。
