Tag: typescript

What is TypeScript and why would I use it in place of JavaScript?

The Question : 1748 people think this question is useful Can you please describe what the TypeScript language is? What can it do that JavaScript or available libraries cannot do, that would give me reason to consider it? The Question Comments : Check out this blog: blogs.msdn.com/b/somasegar/archive/2012/10/01/… Here are some thought on this: blog.priceandcost.com/development/… Some

Cannot get the key value from JSON Data child object in Angular2

问题内容: I’m working on angular and try to populate the data from the child object’s key value. The JSON data is here : "other_lessons": [ { "id": 290, "name": "Christmas Test #290", "course": { "id": 43, "name": "Christmas Test ", "description": "", "teacher": { "id": 4, "name": "Sandy's Teacher", "email": "abc@s.com", "role": "TEACHER", "token": "abcd",

typescript Cannot add headers to a fetch api using react-native

问题内容: I am using Fetch API from react-native and I am using typescript. My code looks like this: let responseLogin = await fetch('http://url_example', { method: 'POST', headers: {'Content-Type':'application/json'}, body: requestBody }); But I get the following error where the header is: Argument of type '{ method: string; headers: { 'Content-Type': string; }; body: string; }'

Why I need generic in Typescript

问题内容: In below sample i use generic function: function Identity<T>(arg: T): T { return arg; } I can write my method in this way : function loggingIdentity(arg) { return arg; } Both of method can accept any type value and return any value.what is benefit of using generic for above method ? in other sample