fetch | 易学教程

Loading Data from Behance API in React Component

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问题 I am trying to load Behance project data via their API. Whether its localhost or prod, I am getting the following error -- Fetch API cannot load XXX. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:5000' is therefore not allowed access. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled. Not sure how to solve

Django returns 403 error on POST request with Fetch

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问题 I have a graphql server implemented using graphene-django. I can make queries to it using jquery like this: function allIngredients() { return 'query{allProducts{edges{node{name}}}}' } var query = allIngredients(); $.ajaxSetup({ data: {csrfmiddlewaretoken: '{{ csrf_token }}' }, }); $.post("/graphql", {query: query}, function(response) { console.log(response); }) However, when I try this call with Fetch, I get a 403, because of the CORS issue. I solved the same problem in jQuery by adding

jQuery - get all src of images in div and put into field

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问题 I want to modified this tutorial to my requirements but there is one problem to me. I'm a beginner with jQuery and I would like to get all image sources from specifïc div and put them into field. There is a variable images which is field and contain some images but I want instead of this get all image sources from div and put them into field images . I know that isn't such a complicated but I don't really know how to do it. The source is here http://jsfiddle.net/s5V3V/36/ This is the variable

Get total row count while paging

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问题 I have a search screen where the user has 5 filters to search on. I constructed a dynamic query, based on these filter values, and page 10 results at a time. This is working fine in SQL2012 using OFFSET and FETCH , but I'm using two queries to do this. I want to show the 10 results and display the total number of rows found by the query (let's say 1000). Currently I do this by running the query twice - once for the Total count, then again to page the 10 rows. Is there a more efficient way to

iOS 7 SDK: 如何使用后台获取（Background Fetch）

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 本文主要教你如何使用iOS 7 SDK多任务处理API--Background Fetch。我们生活在一个社交化的世界中，大部分用户都安装了几个社交类app，但是每次用户打开app，他们必须要等待app加载更新才能看到跟更多最新的内容，对于越来越没耐心的用户来说这一点无疑令人非常痛苦。现在，iOS 7的后台获取（Background Fetch）可以很好地解决这个问题，在用户打开应用之前，app就能自动更新获取内容。以检测流量的app为例来说明Background Fetch如何工作。如果你会在每天早上查看应用，我们假设在8:20 AM,，你的iOS app必须在当时获得信息。现在如果操作系统知道你将会在8:20 AM左右使用app，那么它可以提前获得数据，从而提供更好的用户体验。关于iOS 7多任务执行更全面的概览可参看我们的主题“ iOS 7 SDK: Multitasking Enhancements ”。以下我们将会以一个实例工程来演示如何使用后台获取（Background Fetch）。 1.项目安装第一步是创建一个iOS 7项目，并选择单视图app，接着添加一些有用的属性： @property (nonatomic) NSMutableArray *objects; @property

Git Pull Doesn't Do A Git Fetch

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问题 My understanding has always been that git pull is essentially a combination of git fetch and git merge ... but I have encountered it a number of times where pulling, then comparing shows changes that aren't mine until I also do a fetch: (on branch blob): git pull origin blob git diff origin/blob <- shows a bunch of changes that aren't from my but were just pulled from others git fetch git diff origin/blob <- shows just my changes Is my understanding of pull incorrect? 回答1: This is a common

PDO prepared statement fetch() returning double results

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问题 I have a script that is outputting to a CSV file. However, even though there is currently one row in the database, the output I'm getting is echoing out each column from each row in the table twice. For example: 1,1,John,John,Smith,Smith,2014,2014 Should be 1,John,Smith,2014 This worked fine before I went with PDO and prepared statements, so I'm thinking maybe I'm not understanding how fetch() works correctly. Below is my code. Any idea what I could be doing wrong? // get rows $query_get_rows

JPA 2 Criteria Fetch Path Navigation

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问题 With JPA 2 Criteria Join method I can do the following: //Join Example (default inner join) int age = 25; CriteriaBuilder cb = entityManager.getCriteriaBuilder(); CriteriaQuery<Team> c = cb.createQuery(Team.class); Root<Team> t = c.from(Team.class); Join<Team, Player> p = t.join(Team_.players); c.select(t).where(cb.equal(p.get(Player_.age), age)); TypedQuery<Team> q = entityManager.createQuery(c); List<Team> result = q.getResultList(); How can I do the same with fetch method, I expected that

How to use $_GET?

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问题 I have the following login script, where i do use sessions. <?php session_start(); if(isset($_SESSION['logged_in'])){ $id = $_SESSION['id']; header("Location: start.php?id=$id"); exit(); } if(isset($_POST['submit'])){ $x1 = $_POST['x1']; $x2 = $_POST['x2']; ... $query = $db->query("SELECT * FROM table WHERE x1='".$x1."' AND x2='".$x2."'"); if($query->num_rows === 1){ $row = $query->fetch_object(); $id = $row->id; $_SESSION['logged_in'] = true; $_SESSION['id'] = $id; header("Location: start

fetch resolves even if 404?

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问题 Using this code : fetch('notExists') // <---- notice .then( function(response) { alert(response.status) } ) .catch(function(err) { alert('Fetch Error : ', err); }); This promise resolves . mdn It returns a promise that resolves to the Response to that request, whether it is successful or not. Isn't it strange that a failed ajax request is resolved even if it goes to an non-existing resource ? I mean - what next ? a fetch to a server which is down and still get a resolved promise ? I know I