[英]Covert object to array of combinations/objects
Using lodash or underscore. 使用lodash或下划线。 I'm trying to convert this object:
我正在尝试转换此对象:
{
"variations": {
"versions": ["sport", "generic"],
"devices": ["mobile", "tablet"]
}
}
to this: 对此:
var variations = [{
"version": "sport",
"device": "mobile"
}, {
"version": "sport",
"device": "tablet"
}, {
"version": "generic",
"device": "mobile"
}, {
"version": "generic",
"device": "tablet"
}];
What's the best/shortest method to do this? 最好/最短的方法是什么?
Not sure with lodash or undesrcore. 不确定lodash或undesrcore。 But with simple jquery i have done this.
但是用简单的jQuery,我做到了。 take a look.
看一看。
var object={
"variations": {
"versions": ["sport", "generic"],
"devices": ["mobile", "tablet"]
}
};
var variations=[];
$.each(object.variations.versions, function(i, j) {
$.each(object.variations.devices, function(k, l) {
variations.push({version:j,device:l});
});
});
I think you wanna set object key
to new variable name
and do combinations of inside object values. 我想您想将
object key
设置为新的variable name
,并进行内部对象值的组合。
<script type="text/javascript">
//here I created two object keys for more clear
var json ={
"variations": {
"versions": ["sport", "generic"],
"devices": ["mobile", "tablet"]
},
"another_variations": {
"versions": ["sport", "generic"],
"devices": ["mobile", "tablet"]
}
};
for(var i in json){
window[i] = []; //here window[variable] will make global variable
ver = Object.keys(json[i])[0];//Object.keys(json[i]) get object keys ~["versions","devices"]
dev = Object.keys(json[i])[1];
window[i].push(
{
[ver]:json[i].versions[0],
[dev]:json[i].devices[0]
},
{
[ver]:json[i].versions[0],
[dev]:json[i].devices[1]
},
{
[ver]:json[i].versions[1],
[dev]:json[i].devices[0]
},
{
[ver]:json[i].versions[1],
[dev]:json[i].devices[1]
});
}
console.log(variations); //here can call object key as a variable name if you
console.log(another_variations);//don't use `window[variable]` in above, this will print undefined error
</script>
Found a solution using: https://gist.github.com/wassname/a882ac3981c8e18d2556 使用以下方法找到了解决方案: https : //gist.github.com/wassname/a882ac3981c8e18d2556
_.mixin({
cartesianProductOf: function(args) {
if (arguments.length > 1) args = _.toArray(arguments);
// strings to arrays of letters
args = _.map(args, opt => typeof opt === 'string' ? _.toArray(opt) : opt)
return _.reduce(args, function(a, b) {
return _.flatten(_.map(a, function(x) {
return _.map(b, function(y) {
return _.concat(x, [y]);
});
}), true);
}, [
[]
]);
},
cartesianProductObj: function(optObj) {
var keys = _.keys(optObj);
var opts = _.values(optObj);
var combs = _.cartesianProductOf(opts);
return _.map(combs, function(comb) {
return _.zipObject(keys, comb);
});
}
});
See working: 查看工作:
https://jsfiddle.net/rickysullivan/5ryf9jsa/ https://jsfiddle.net/rickysullivan/5ryf9jsa/
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