带单引号参数的Javascript字符串

Question

Call function below relies in double and single quotes how can one convert this to single quotes only and get the same result?

const task.func = 'A'
const task.arg = 'B'
const callFunction = "doTask."+task.func+"('"+task.arg+"')"

console.log(callFunction); // doTask.A('B')

Answer 1

const callFunction = 'doTask.' + task.func + '(\'' + task.arg + '\')'

您需要使用\\来转义单引号\\

Answer 2

Escape the single quotes:

 const task = { func: 'A', arg: 'B' }; const callFunction = 'doTask.' + task.func + '(\\'' + task.arg + '\\')'; console.log(callFunction); // doTask.A('B') 

Or, if you consider a backtick to be a single quote, you can use template literals :

 const task = { func: 'A', arg: 'B' }; const callFunction = `doTask.${task.func}('${task.arg}')`; console.log(callFunction); // doTask.A('B') 

Answer 3

You are not calling function func rather you are just creating a string which looks like function in below line ,

const callFunction = "doTask."+task.func+"('"+task.arg+"')";

Also you need not to use quotes, just provide variable name as argument.

Try like this.

 task = {}; task.func = function (arg){ return 'func called with arg : '+arg; }; task.arg = 'B'; const callFunction = 'doTask.'+task.func(task.arg); console.log(callFunction);