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Javascript 2021-10-20 00:59:12
how to detect changes in a div javascript
Press enter var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver; var list = document.querySelector('ol'); var observer = new MutationObserver(function(mutations) { mutations.forEac... Add solution -
Javascript 2021-10-19 13:04:06
asyncstorage.getallkeys
importData = async () => { try { const keys = await AsyncStorage.getAllKeys(); const result = await AsyncStorage.multiGet(keys); return result.map(req => JSON.parse(req)).forEach(console.log); } catch (error) { console.error(err... Add solution -
Javascript 2021-10-19 11:13:08
javascript foreach array of object get value by key
var lunch = { sandwich: 'ham', snack: 'chips', drink: 'soda', desert: 'cookie', guests: 3, alcohol: false, }; Object.keys(lunch).forEach(function (item) { console.log(item); // key console.log(lunch[item]); // value }); // returns "sandwich... Add solution -
Javascript 2021-10-19 05:38:10
reactjs typeError: Cannot read property 'offsetHeight' of null
handleResize = () => { let highestSlide = 0; this.refArray.forEach(ref => { if (ref.current && highestSlide < ref.current.offsetHeight) { highestSlide = ref.current.offsetHeight; } }); }; Add solution -
Javascript 2021-10-18 02:36:04
iterate through list js
var data = [1, 2, 3, 4, 5, 6]; // traditional for loop for(let i=0; i<=data.length; i++) { console.log(data[i]) // 1 2 3 4 5 6 } // using for...of for(let i of data) { console.log(i) // 1 2 3 4 5 6 } // using for...in for(let i in data) { con... Add solution -
Java 2021-10-17 14:36:05
how to use lambda in java
A lambda expression is a short block of code which takes in parameters and returns a value. Lambda expressions are similar to methods, but they do not need a name and they can be implemented right in the body of a method. parameter -> expression To ... Add solution