var rawDataList =
[
{
"countDate": "2018-04-08",
"countNum": "5"
},
{
"countDate": "2018-04-18",
"countNum": "2"
},
{
"countDate": "2018-04-23",
"countNum": "7"
}
]how can an json array like this delete an item based on the value of countNum and return a new array?
Filter is available through array filter ();
var rawDataList =
[
{
"countDate": "2018-04-08",
"countNum": "5"
},
{
"countDate": "2018-04-18",
"countNum": "2"
},
{
"countDate": "2018-04-23",
"countNum": "7"
}
]
rawDataList = rawDataList.filter(i=>i.countNum!=="7")Note that the value of your countNum is of type string.
const newDataList = rawDataList.filter(item => {
return item.countNum !== value;
})can take a look at the use of filter.
for example, if you want to delete an item with a value of 2 for countNum
var countValue = 2; //
var newArray= rawDataList .filter(function(item){ return item.countNum!= countValue });newArray is the new array you need
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