splice

Checking values between individual elements in two arrays

由 我与影子孤独终老i 提交于 2021-02-05 09:46:47
问题 I am trying to remove specific elements from an array based on data I'm getting from an API. The API returns an array of objects like this {"videoDate":"07/31/2020","videoTime":"1:00 AM"}. I have an existing array with items that look like this "07/31/2020 1:00 AM". My intention is to check if the existing array contains an item with a string matching both the videoDate and videoTime strings from the object and remove them. let responseArray = JSON.parse(response); dayArray.forEach((day) => {

Checking values between individual elements in two arrays

由 霸气de小男生 提交于 2021-02-05 09:45:32
问题 I am trying to remove specific elements from an array based on data I'm getting from an API. The API returns an array of objects like this {"videoDate":"07/31/2020","videoTime":"1:00 AM"}. I have an existing array with items that look like this "07/31/2020 1:00 AM". My intention is to check if the existing array contains an item with a string matching both the videoDate and videoTime strings from the object and remove them. let responseArray = JSON.parse(response); dayArray.forEach((day) => {

How does while loop work without a condition?

由 旧街凉风 提交于 2021-02-05 09:17:45
问题 I understand that it's removing the first 3 elements of the array and adding them to the new array. But how does the function continue to add ensuing chunks of the array to the new array variable? How does the while loop work without proper conditions? How does it work in collaboration with splice() here? function chunkArrayInGroups(arr, size){ let newArr = []; while(arr.length){ newArr.push(arr.splice(0, size)) } return newArr; } chunkArrayInGroups(["a", "b", "c", "d"], 2); 回答1: The

How to remove list of splices from array in JavaScript?

由 梦想的初衷 提交于 2021-01-28 05:26:44
问题 I have list of indexes: var remove_list = [ [ 7, 12 ], [ 12, 14 ] ]; and list of tokens of S-Expression from Scheme lisp. var tokens = [ '(', 'let', '(', '(', 'x', '10', ')', '#;', '(', 'foo', 'bar', ')', '#;', 'xxx', ')', '(', '*', 'x', 'x', ')', ')' ]; what is the best way to remove all items from tokens. (it suppose to remove inline commands #;(foo bar) ad #;xxx as specified in R7RS). I can use this: for (let remove of remove_list) { tokens.splice(...remove); } because after first call to

splice does not delete the current element

由 北战南征 提交于 2021-01-07 02:43:45
问题 I am trying to delete the current item on click, but when i run it it deletes only the last item. I'm going crazy, on another component I did the same thing and it worked...I don't know why here! This is the code, I am using various libraries... <template> <div class="hours-container"> <div class="hours" v-for="(time, index) in hour" :key="index"> <a-time-picker :default-value="moment('08:00', 'HH:mm')" format="HH:mm" :minute-step="15" :allowClear="allowClear" /> <span> to </span> <a-time

splice does not delete the current element

由 女生的网名这么多〃 提交于 2021-01-07 02:43:26
问题 I am trying to delete the current item on click, but when i run it it deletes only the last item. I'm going crazy, on another component I did the same thing and it worked...I don't know why here! This is the code, I am using various libraries... <template> <div class="hours-container"> <div class="hours" v-for="(time, index) in hour" :key="index"> <a-time-picker :default-value="moment('08:00', 'HH:mm')" format="HH:mm" :minute-step="15" :allowClear="allowClear" /> <span> to </span> <a-time

splice not working with a array row vue js

由 狂风中的少年 提交于 2020-12-26 05:14:56
问题 I have a Object array but when i want remove a object from array list only items are deleted from the end <div class="hours" v-for="(time, index) in hour" :key="index"> then I put the click function on an icon <b-icon v-if="time.delete" icon="x" width="20" height="20" class="delete-time" @click="deleteTime(index)" ></b-icon> but when I go to do the delete methods: { moment, deleteTime(index) { this.hour.splice(index, 1); }, 回答1: I discovered that the challenge is that you need to add a unique

js中array(数组)对象的splice方法的详解

由 不打扰是莪最后的温柔 提交于 2020-04-08 04:26:41
splice()可向数组删除并加入新的元素。 语法 arrayObject.splice(index,howmany,element1,.....,elementX) <script type="text/javascript"> var arr = new Array(5) arr[0] = "Jani" arr[1] = "Hege" arr[2] = "Stale" arr[3] = "Kai Jim" arr[4] = "Borge" document.write(arr + "<br />") arr.splice(2,0,"Lene") document.write(arr + "<br />") </script> 输出结果为： Jani,Hege,Stale,Kai Jim,Borge Jani,Hege,Lene,Stale,Kai Jim,Borge arr.splice(2,1,"Tove") 输出结果为： Jani,Hege,Stale,Kai Jim,Borge Jani,Hege,Tove,Kai Jim,Borge arr.splice(2,3,"Tove") 输出结果为： Jani,Hege,Stale,Kai Jim,Borge Jani,Hege,Tove 来源： https://www.cnblogs.com/xcj1989/archive

在JavaScript中删除数组元素-Delete与Splice

由 风格不统一 提交于 2020-04-06 17:28:40
问题： What is the difference between using the delete operator on the array element as opposed to using the Array.splice method ? 在数组元素上使用 delete 运算符 与使用 Array.splice 方法有 什么 Array.splice ？ For example: 例如： myArray = ['a', 'b', 'c', 'd']; delete myArray[1]; // or myArray.splice (1, 1); Why even have the splice method if I can delete array elements like I can with objects? 如果可以像删除对象一样删除数组元素，为什么还要使用splice方法？ 解决方案： 参考一： https://stackoom.com/question/26EI/在JavaScript中删除数组元素-Delete与Splice 参考二： https://oldbug.net/q/26EI/Deleting-array-elements-in-JavaScript-delete-vs-splice 来源： oschina 链接： https://my

[javascript]数组基础

由 只愿长相守 提交于 2020-03-19 19:10:02
arguments的用法 1 function sum(){ 2 var result = 0; 3 for(var i=0;i<arguments.length;i++) 4 { 5 result += argument[i]; 6 } 7 return result; 8 } 9 alert(sum(2,3,4)); //10 数组的定义 var a = [1,2,3] 或者 var a = new Array(1,2,3); 数组的属性 -length 既可以获取，也可以设置 var arr = [0,1,2,3] arr.length = 3 ; alert(arr); //0,1,2 数组的添加和删除 -push 在数组末尾添加一个元素 var arr = [0,1,2]; arr.push(3); alert(arr); //0,1,2,3 -pop 在数组末尾删除一个元素 var arr = [0,1,2]; arr.pop(); alert(arr); //0,1 -shift 在数组头部删除一个元素 var arr = [0,1,2]; arr.shift(); alert(arr); //1,2 -unshift 在数组头部添加一个元素 var arr = [0,1,2]; arr.unshift(3); alert(arr); //3,0,1,2
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