I have the following array:
[
{
"name":"John Smith"
},
{
"name":"Mary Kay"
},
{
"name":"Peter Pan"
},
{
"name":"Ben Franklin"
}
];
How can I get all the first string name with lodash, like:
result = ["John", "Mary", "Peter", "Ben"]
Here's an alternative that makes use of lodash' flow(), that executes property() to get the property of each item in an object (e.g. name), words(), to split strings into words (array), and lastly, first() to get the first item from an array.
var result = _.map(source, _.flow(_.property('name'), _.words, _.first));
var source = [{
"name": "John Smith"
}, {
"name": "Mary Kay"
}, {
"name": "Peter Pan"
}, {
"name": "Ben Franklin"
}];
var result = _.map(source, _.flow(_.property('name'), _.words, _.first));
console.log(result);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.js"></script>Here's another implementation of the solution above that does not use flow() and property():
var result = _.map(source, function(item) {
return _(item.name).words().first();
});
var source = [{
"name": "John Smith"
}, {
"name": "Mary Kay"
}, {
"name": "Peter Pan"
}, {
"name": "Ben Franklin"
}];
var result = _.map(source, function(item) {
return _(item.name).words().first();
});
console.log(result);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.js"></script>Use JavaScript Array#map and String#split methods.
var data = [{
"name": "John Smith"
}, {
"name": "Mary Kay"
}, {
"name": "Peter Pan"
}, {
"name": "Ben Franklin"
}];
console.log(
// iterate over the array to generate result array
data.map(function(v) {
// split the value by space and return first element
return v.name.split(' ')[0];
})
)
// with ES6 arrow function
console.log(
data.map(v => v.name.split(' ')[0])
)
console.log(_.map(data, function(item){
return _.split(item.name,' ',1)[0];
}));
var t = [
{
"name":"John Smith"
},
{
"name":"Mary Kay"
},
{
"name":"Peter Pan"
},
{
"name":"Ben Franklin"
}
];
var result = [];
t.forEach(function(element) {
result.push(element.name)
});
console.log(result)
If you like short code (using parameter destructuring to extract name):
result = _.map(data, ({name}) => _.words(name)[0]);
