针对你提出的问题 this.fetchdata is not a function,我将从以下几个方面进行分析和解答: 确认this.fetchdata是否已在当前上下文中定义: 首先,需要确保在你的类或者对象中确实定义了一个名为 fetchdata 的方法。如果方法名拼写错误或者大小写不匹配,JavaScript 会将其视为未定义。 示例代码: javascript class My...
我在加载更多数据_fetchMoreData()的时候重新调用this._fetchData(),为什么这里会报‘this._fetchData() is not a function()’ componentDidMount(){ this._fetchData(1) } //请求数据 _fetchData(page) { const that = this //如果页数不为零,则修改上滑isLoadingData的state为true; //否则就修改下拉...
对于 WordPress 、 Typecho 等等这里动态站点来说某一天流量达到这个阈值的时候，还可以部署LNMPA这样的生...
fetch('flowers.jpg').then(function (response) { if (response.ok) { return response.blob(); } throw new Error('Network response was not ok.'); }).then(function (myBlob) { var objectURL = URL.createObjectURL(myBlob); myImage.src = objectURL; }).catch(function (error) { console.lo...
fetch('flowers.jpg').then(function(response) {if(response.ok) {returnresponse.blob(); }thrownewError('Network response was not ok.'); }).then(function(myBlob) {varobjectURL =URL.createObjectURL(myBlob); myImage.src=objectURL; }).catch(function(error) { ...
You are not authorized."); }}, function(e) { console.log("Error submitting form!");});如果遇到网络故障，fetch() promise 将会 reject，带上一个 TypeError 对象。想要精确的判断 fetch() 是否成功，需要包含 promise resolved 的情况，此时再判断 Response.ok 是不是为 true。Fetch 实现了四个接口...
javascript - Not getting data in fetch even if the status is 200 in react - Stack Overflow I am having below problem with the fetch function: React code: ponentDidMount() { this.userService.getLoggedInUser() .then(user => { this.setState({user: user});...
XMLHttpRequest cannot load http://你请求的域名. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://当前页的域名' is therefore not allowed access. 1. 2. 3. 哪些情况会产生跨域问题 一个网站的网址组成包括协议名,子域名,主域名,端口号。比如https:///...
function postData(url, data) { // Default options are marked with * return fetch(url, { body: JSON.stringify(data), // must match 'Content-Type' header cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached credentials: 'same-origin', // include, same-...
The error in iOS Simulator is: After trying a few hours, I still did not know how to fix the error, so please give me a hint!!! A better place for this would be stack overflow; anyway, my guess is thatthisis not bound to the object that you expect it to be bound to. If you...