هنگامی که بر روی یک button کلیک می شود event به div می رسد و آن onclick را فرامیخواند. onclick به bounded متصل شده است. پس آن فراخوانی می شود در هنگام اجرای بدنه bounded مقدار this برابر است با div و درون این متد that و context بکار گرفته می شوند به خط return that.apply(context,newArgs); توجه کتید. به عبارت دیگر درون این متد اساسا کاری با this نداریم 😊 پس به درستی context را تغییر داده ایم
- Call invokes the function and allows you to pass in arguments one by one.
- Apply invokes the function and allows you to pass in arguments as an array.
- Bind returns a new function, allowing you to pass in a this array and any number of arguments.
- Apply invokes the function and allows you to pass in arguments as an array.
- Bind returns a new function, allowing you to pass in a this array and any number of arguments.
Call and apply are pretty interchangeable. Just decide whether it’s easier to send in an array or a comma separated list of arguments.
I always remember which one is which by remembering that Call is for comma (separated list) and Apply is for Array.
Bind is a bit different. It returns a new function. Call and Apply execute the current function immediately.
Bind is great for a lot of things. We can use it to curry functions like in the above example. We can take a simple hello function and turn it into a helloJon or helloKelly. We can also use it for events like onClick where we don’t know when they’ll be fired but we know what context we want them to have.
I always remember which one is which by remembering that Call is for comma (separated list) and Apply is for Array.
Bind is a bit different. It returns a new function. Call and Apply execute the current function immediately.
Bind is great for a lot of things. We can use it to curry functions like in the above example. We can take a simple hello function and turn it into a helloJon or helloKelly. We can also use it for events like onClick where we don’t know when they’ll be fired but we know what context we want them to have.
کد فوق و کدهای زیر در جلسه فردا ارزیابی خواهیم کرد. در ادامه Timing functions های مختلف آورده شده است
فونتهای استاندارد پیشنهادی گوگل برای موبایل و وب
https://www.google.com/get/noto/
https://www.google.com/get/noto/