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JS how to get the values of multiple objects in an array
2022-06-12 12:23:00 【Cherry*】
data: [
{
"num": 1.81,
"time": "2021-04-06"
}, {
"num": 1.82,
"time": "2021-04-07"
}, {
"num": 1.8,
"time": "2021-04-08"
}, {
"num": 1.91,
"time": "2021-04-09"
}, {
"num": 1.8,
"time": "2021-04-10"
}, {
"num": 1.81,
"time": "2021-04-11"
}
]
// Define an array to store time
let timeArr = [];
this.data.forEach((item)=>{
timeArr.push(item.time)
})
console.log(timeArr)
// result ["2021-04-06", "2021-04-07", "2021-04-08", "2021-04-09", "2021-04-10", "2021-04-11"]
forEach() Method is used to call each element of an array , And pass the element to the callback function . Be careful : forEach() Callbacks are not performed for empty arrays .
push() Method to add one or more elements to the end of an array , And returns the new length . Be careful : The new element will be added at the end of the array . This method changes the length of the array .
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