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[英]index.js:8 Uncaught TypeError: Cannot read property 'addEventListener' of undefined at index.js:8,
[英]Index.js:46 Uncaught TypeError: Cannot Read Property 'lifestyle' Of Undefined
我是 jquery 的新手,我正在編寫一個 ajax 調用來從 API 檢索數據,
該功能用於現場和本地,
在我的本地,響應是
var response = res;
var test = response.hearts.assessments.lifestyle
在我的直播中,回應是
var response = res;
var test = response.assessments.lifestyle
它沒有[心臟]
我需要實現一個條件來處理這兩個條件
目前,我使用了 if-else 條件,但它在我的本地給出了未定義生活方式的錯誤。
這是我的代碼
var response = res;
if(typeof(response.assessments.lifestyle) != "undefined" || response.assessments.lifestyle !== null) {
var lifestyle = response.assessments.lifestyle;
}
else{
var lifestyle = response.hearts.assessments.lifestyle;
}
但是這段代碼不起作用,有人可以幫忙嗎謝謝..
按規定嘗試
let response = response.assessments || response.hearts.assessments || [];
response = response.lifestyle ||"";
如果“response.assessments”未定義,它將檢查“response.hearts.assessments”,如果兩者都未定義或為空或未定義,它將返回空數組第二行以檢查生活方式屬性,如果未定義則為空字符串
您應該使用此方法檢查 response.assessments 中是否存在關鍵的“hearts”
var response = res;
if("hearts" in response) {
var lifestyle = response.hearts.assessments.lifestyle;
} else {
var lifestyle = response.assessments.lifestyle;
}
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