I have an ajax request that returns a list of values like this:
我有一个ajax请求,它返回如下值列表:
"[-5, 5, 5], [-6, 15, 15], [7, 13, 12]"
I need it to be a javascript array with numbers:
我需要它是一个带有数字的javascript数组:
[[-5, 5, 5], [-6, 15, 15], [7, 13, 12]]
I tried to replace the '[' and ']' for a '|' and then split by '|' and foreach item split by ',' and add them to an array, but this is not elegant at all.
我试图将'['和']'替换为'|',然后将'|'分割为',并将它们添加到数组中,但这一点都不优雅。
Do you guys have any suggestions?
你们有什么建议吗?
5 个解决方案
#1
17
You can use JSON.parse()
to convert that string into an array, as long as you wrap it in some brackets manually first:
您可以使用JSON.parse()将该字符串转换为数组,只要您先手工将其封装在一些括号中:
var value = "[-5, 5, 5], [-6, 15, 15], [7, 13, 12]";
var json = JSON.parse("[" + value + "]");
console.log(json);
I would suggest correcting the output at the server if possible, though.
不过,如果可能的话,我建议在服务器上修改输出。
#2
2
This solution is stupid in practice -- absolutely use JSON.parse
as others have said -- but in the interest of having fun with regular expressions, here you go:
这个解决方案在实践中很愚蠢——绝对要使用JSON。正如其他人所说的那样进行解析——但为了让正则表达式更有趣,这里有:
function getMatches(regexp, string) {
var match, matches = [];
while ((match = regexp.exec(string)) !== null)
matches.push(match[0]);
return matches;
}
function parseIntArrays(string) {
return getMatches(/\[[^\]]+\]/g, string)
.map(function (string) {
return getMatches(/\-?\d+/g, string)
.map(function (string) {
return parseInt(string);
});
});
}
parseIntArrays("[-5, 5, 5], [-6, 15, 15], [7, 13, 12]");
#3
1
In a function
在一个函数中
var strToArr = function(string){ return JSON.parse('[' + string + ']')}
console.log(strToArr("[-5, 5, 5], [-6, 15, 15], [7, 13, 12]"));
#4
1
var string = "[-5, 5, 5], [-6, 15, 15], [7, 13, 12]";
var arr = [];
var tmp = string.split('], ');
for (var i=0; i<tmp.length; i++) {
arr.push(tmp[i].replace(/\[|\]/g, '').split(', '));
}
Typing on my iPad so I apologize in advance for any typos.
在我的iPad上输入,所以我为任何拼写错误提前道歉。
#5
0
If you're generating the data, and you trust it, just use eval
:
如果您正在生成数据,并且信任它,请使用eval:
var string = "[-5, 5, 5], [-6, 15, 15], [7, 13, 12]"
var arrays = eval('[' + string + ']');
Alternatively, start returning well-formed JSON.
或者,开始返回格式良好的JSON。
#1
17
You can use JSON.parse()
to convert that string into an array, as long as you wrap it in some brackets manually first:
您可以使用JSON.parse()将该字符串转换为数组,只要您先手工将其封装在一些括号中:
var value = "[-5, 5, 5], [-6, 15, 15], [7, 13, 12]";
var json = JSON.parse("[" + value + "]");
console.log(json);
I would suggest correcting the output at the server if possible, though.
不过,如果可能的话,我建议在服务器上修改输出。
#2
2
This solution is stupid in practice -- absolutely use JSON.parse
as others have said -- but in the interest of having fun with regular expressions, here you go:
这个解决方案在实践中很愚蠢——绝对要使用JSON。正如其他人所说的那样进行解析——但为了让正则表达式更有趣,这里有:
function getMatches(regexp, string) {
var match, matches = [];
while ((match = regexp.exec(string)) !== null)
matches.push(match[0]);
return matches;
}
function parseIntArrays(string) {
return getMatches(/\[[^\]]+\]/g, string)
.map(function (string) {
return getMatches(/\-?\d+/g, string)
.map(function (string) {
return parseInt(string);
});
});
}
parseIntArrays("[-5, 5, 5], [-6, 15, 15], [7, 13, 12]");
#3
1
In a function
在一个函数中
var strToArr = function(string){ return JSON.parse('[' + string + ']')}
console.log(strToArr("[-5, 5, 5], [-6, 15, 15], [7, 13, 12]"));
#4
1
var string = "[-5, 5, 5], [-6, 15, 15], [7, 13, 12]";
var arr = [];
var tmp = string.split('], ');
for (var i=0; i<tmp.length; i++) {
arr.push(tmp[i].replace(/\[|\]/g, '').split(', '));
}
Typing on my iPad so I apologize in advance for any typos.
在我的iPad上输入,所以我为任何拼写错误提前道歉。
#5
0
If you're generating the data, and you trust it, just use eval
:
如果您正在生成数据,并且信任它,请使用eval:
var string = "[-5, 5, 5], [-6, 15, 15], [7, 13, 12]"
var arrays = eval('[' + string + ']');
Alternatively, start returning well-formed JSON.
或者,开始返回格式良好的JSON。