$http call twice: OPTION and then GET in AngularJS





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I want to call an HTTP GET via :
this.$http.get(this.baseURL, { headers: { 'apikey': 'abc' } })
But it doesn't run as I expect. When I debug on chrome it shows Request Method: OPTIONS and the Headers do not have apikey. What happened?



Update:
Actually, the request is called twice, first is OPTION and then GET. As I understand, it caused by "preflight": https://www.html5rocks.com/en/tutorials/cors/#toc-adding-cors-support-to-the-server



"Any request that does not meet the criteria above is a not-so-simple request, and requires a little extra communication between the browser and the server (called a preflight request), which we’ll get into below."










share|improve this question

























  • Change your question tag to "Angular". Because AngularJs and Angular are totally different and TypeScript is used in Angular.

    – Manish Menaria
    Nov 16 '18 at 7:24











  • I know that bro, actually my project is written on AngularJS and used TypeScript Definition for using TypeScript. But it is not Angular

    – Le Ngoc Thuong
    Nov 16 '18 at 7:26













  • So based on your update, you now know what is happening? Do you still have some unanswered question here?

    – Claies
    Nov 24 '18 at 3:36











  • Yeah, I know what is happening here.

    – Le Ngoc Thuong
    Dec 6 '18 at 6:23


















1















I want to call an HTTP GET via :
this.$http.get(this.baseURL, { headers: { 'apikey': 'abc' } })
But it doesn't run as I expect. When I debug on chrome it shows Request Method: OPTIONS and the Headers do not have apikey. What happened?



Update:
Actually, the request is called twice, first is OPTION and then GET. As I understand, it caused by "preflight": https://www.html5rocks.com/en/tutorials/cors/#toc-adding-cors-support-to-the-server



"Any request that does not meet the criteria above is a not-so-simple request, and requires a little extra communication between the browser and the server (called a preflight request), which we’ll get into below."










share|improve this question

























  • Change your question tag to "Angular". Because AngularJs and Angular are totally different and TypeScript is used in Angular.

    – Manish Menaria
    Nov 16 '18 at 7:24











  • I know that bro, actually my project is written on AngularJS and used TypeScript Definition for using TypeScript. But it is not Angular

    – Le Ngoc Thuong
    Nov 16 '18 at 7:26













  • So based on your update, you now know what is happening? Do you still have some unanswered question here?

    – Claies
    Nov 24 '18 at 3:36











  • Yeah, I know what is happening here.

    – Le Ngoc Thuong
    Dec 6 '18 at 6:23














1












1








1








I want to call an HTTP GET via :
this.$http.get(this.baseURL, { headers: { 'apikey': 'abc' } })
But it doesn't run as I expect. When I debug on chrome it shows Request Method: OPTIONS and the Headers do not have apikey. What happened?



Update:
Actually, the request is called twice, first is OPTION and then GET. As I understand, it caused by "preflight": https://www.html5rocks.com/en/tutorials/cors/#toc-adding-cors-support-to-the-server



"Any request that does not meet the criteria above is a not-so-simple request, and requires a little extra communication between the browser and the server (called a preflight request), which we’ll get into below."










share|improve this question
















I want to call an HTTP GET via :
this.$http.get(this.baseURL, { headers: { 'apikey': 'abc' } })
But it doesn't run as I expect. When I debug on chrome it shows Request Method: OPTIONS and the Headers do not have apikey. What happened?



Update:
Actually, the request is called twice, first is OPTION and then GET. As I understand, it caused by "preflight": https://www.html5rocks.com/en/tutorials/cors/#toc-adding-cors-support-to-the-server



"Any request that does not meet the criteria above is a not-so-simple request, and requires a little extra communication between the browser and the server (called a preflight request), which we’ll get into below."







javascript angularjs






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share|improve this question













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edited Nov 24 '18 at 3:12







Le Ngoc Thuong

















asked Nov 16 '18 at 7:20









Le Ngoc ThuongLe Ngoc Thuong

645




645













  • Change your question tag to "Angular". Because AngularJs and Angular are totally different and TypeScript is used in Angular.

    – Manish Menaria
    Nov 16 '18 at 7:24











  • I know that bro, actually my project is written on AngularJS and used TypeScript Definition for using TypeScript. But it is not Angular

    – Le Ngoc Thuong
    Nov 16 '18 at 7:26













  • So based on your update, you now know what is happening? Do you still have some unanswered question here?

    – Claies
    Nov 24 '18 at 3:36











  • Yeah, I know what is happening here.

    – Le Ngoc Thuong
    Dec 6 '18 at 6:23



















  • Change your question tag to "Angular". Because AngularJs and Angular are totally different and TypeScript is used in Angular.

    – Manish Menaria
    Nov 16 '18 at 7:24











  • I know that bro, actually my project is written on AngularJS and used TypeScript Definition for using TypeScript. But it is not Angular

    – Le Ngoc Thuong
    Nov 16 '18 at 7:26













  • So based on your update, you now know what is happening? Do you still have some unanswered question here?

    – Claies
    Nov 24 '18 at 3:36











  • Yeah, I know what is happening here.

    – Le Ngoc Thuong
    Dec 6 '18 at 6:23

















Change your question tag to "Angular". Because AngularJs and Angular are totally different and TypeScript is used in Angular.

– Manish Menaria
Nov 16 '18 at 7:24





Change your question tag to "Angular". Because AngularJs and Angular are totally different and TypeScript is used in Angular.

– Manish Menaria
Nov 16 '18 at 7:24













I know that bro, actually my project is written on AngularJS and used TypeScript Definition for using TypeScript. But it is not Angular

– Le Ngoc Thuong
Nov 16 '18 at 7:26







I know that bro, actually my project is written on AngularJS and used TypeScript Definition for using TypeScript. But it is not Angular

– Le Ngoc Thuong
Nov 16 '18 at 7:26















So based on your update, you now know what is happening? Do you still have some unanswered question here?

– Claies
Nov 24 '18 at 3:36





So based on your update, you now know what is happening? Do you still have some unanswered question here?

– Claies
Nov 24 '18 at 3:36













Yeah, I know what is happening here.

– Le Ngoc Thuong
Dec 6 '18 at 6:23





Yeah, I know what is happening here.

– Le Ngoc Thuong
Dec 6 '18 at 6:23












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