now you need to pass a image object to the drawImage (img,dx,dy) method of canvas for drawing. but the picture it draws by default has a transparent area around it and is filled with white by default. is the image source as follows: : in t...
problem description found a strange problem that the polling request could not be called the environmental background of the problems and what methods you have tried when I was polling to call a method, I found that the code could not run into the...
this is a very strange problem, which is to use the keyword transient in the entity class to modify the attribute, which is not displayed when as JSON. as JSON doesn t output these attributes. What s going on? ...
problem description error was reported when mac installation mongodb4 started etc mongod --config usr local etc mongod.conf 2018-07-28T12:24:44.168+0800 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabl...
function _getProductType (arr, num, str) { let type = arr.forEach(val => { if (num == val.code_val) { eslint-disable-line type = val.code_desc } else if (num == 1000 ) { eslint-disable-line type = } }) ...
I have a function in all.js that drawA (), now needs to call in the component st of the ionic3 project to draw. has tried several scenarios on google and failed to solve this problem. find a feasible solution. ...