var give = 'i.want.it';
var obj = {
i: {
want: {
it: 'Oh I know you do...'
}
}
};
console.log(obj[give]); // 'Oh I know you do...'
Can I somehow get the object string using a path String of some sort? I'm trying to store a relationship in a database where the field it can't be in it's own document.
Use Array#reduce() method
var give = 'i.want.it';
var obj = {
i: {
want: {
it: 'Oh I know you do...'
}
}
};
var res = give.split('.').reduce(function(o, k) {
return o && o[k];
}, obj);
console.log(res);
data.0.propThis will work :
var give = 'i.want.it';
var obj = {
i: {
want: {
it: 'Oh I know you do...'
}
}
};
console.log( eval("obj."+give));
This is a really easy way to do it, but not safe, i don't advise you to use it for professional use. Use previous answer they looks good.
make it
var obj = {
i: {
want: {
it: 'Oh I know you do...'
}
}
};
//var result = JSON.parse(JSON.stringify(obj)); //cloning the existing obj
var result = obj; //cloning the existing obj
var give = 'i.want.it';
//now split the give and iterate through keys
give.split(".").forEach(function(key){
result = result[key];
});
console.log(result);You can use eval()
var obj = {"a": { "b": { "c": 3}}}; writeln(eval('obj.a.b.c') + 2);
This will output 5.
JavaScript is weakly typed and thus it's evaluation function executes a statement as well as evaluating an expression.
@nina-scholz posted this here in 2016, and then deleted it. But TBH, I think it was the best answer ? ES6.
var give = 'i.want.it';
var obj = {
i: {
want: {
it: 'Oh I know you do...'
}
}
};
console.log(give.split('.').reduce((r, a) => r && r[a], obj));
// 'Oh I know you do...'