[英]How can i use $.map with Object.keys function to get the first value from array given for Object.keys?
[英]Get return Value from Object.keys
我有一个搜索对象的函数,以查看其中是否存在值,但是当我尝试记录它时无法从中获取值。
searchValue(object,value){
let valueExists = Object.keys(object).find(key => object[key].valueID === value );
console.log(valueExists);
}
你可以使用Object(o).values
像:
let valueExists = Object.values(object).find(val => val === value )
console.log(valueExists)
JS 示例:
function searchValue(object, value) { let valueExists = Object.values(object).find(val => val == value) console.log(valueExists) } let user = { id: 12, name: "aaa", email: "aaaa@domain.com", } searchValue(user, "aaa")
如果您已经拥有值(作为searchValue
参数),则不需要“获取”值,因为您已经拥有它(下面我简化了您的实现)
function searchValue(object, value) { return Object.values(object).includes(value); } let obj = {a: "xx", b: "yy"}; let val = "yy" if(searchValue(obj,val)) { console.log("the object value exist and is:", val); }
如果您有兴趣查找与值关联的键,请尝试此操作
function searchKeys(object, value) { return Object.keys(object).filter(k=>object[k]==value); } let obj = {a: "xx", b: "yy", c:"xx"}; let val = "xx" console.log("Keys contains 'xx' value:", searchKeys(obj,val));
为了达到预期的结果,请使用以下使用对象条目并使用 forEach 循环获取值的选项
function searchValue(object,value){ Object.entries(object).forEach(v => { if(v.indexOf(value) !== -1) console.log("valueExists") }); } let test = { id : 11, name: 'abc', location: 'usa' } searchValue(test, 11)
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