What is the best way to swap out words in a sentence with their corresponding values using JavaScript?

Question

What is the best way to swap out words in a sentence with their corresponding values using JavaScript?

In a specific scenario, I am working with a string that looks like this:

Edit:  const message = results.doc.data().taskSettings.taskInProgressSettings.pushNotifications.onAssignmentNotifyEmployee.message;

The contents of the message vary and include variables such as taskId , customerName. However, it can also contain other variables like

taskId , customerName , customerId, taskCreaterName , employeeName , employeeId

. I need to replace these variables with their corresponding values at runtime.

message:`Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName}`
let taskId = T-100;
let taskCreaterName = 'mark';
let customerName = 'henry';

I wish to replace the variables (taskId , taskCreaterName , customername) with their actual values. The desired output should be:

newMessage = Task T-100 assigned by mark for customer henry

What would be the most effective approach to achieve this? Thank you

javascript string typescript replace

Answer 1

Answer №1

To enhance the functionality in a more versatile manner, consider utilizing a singular object (like 'withData' defined below) to consolidate the values for replacement instead of multiple individual variables. Then, leverage a generic function (replace) to handle all modifications dynamically, as demonstrated below:

let message = 'Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName}'

let withData = {
  taskId: 'T-100'
  , taskCreaterName: 'mark'
  , customerName: 'henry'
}

function replace(obj, withData) {
  let result = message.slice(0)
  for (let [key, value] of Object.entries(withData)) {
    result = result.replace('${' + key + '}', value)
  }
  
  return result
}

let result = replace(message, withData)

console.log(result)

// If Object.entries is not supported
function replace(obj, withData) {
  let result = message.slice(0)
  for (let key in withData) {
    let value = withData[key]
    result = result.replace('${' + key + '}', value)
  }
  
  return result
}

Answer 2

To enhance the functionality in a more versatile manner, consider utilizing a singular object (like 'withData' defined below) to consolidate the values for replacement instead of multiple individual variables. Then, leverage a generic function (replace) to handle all modifications dynamically, as demonstrated below:

let message = 'Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName}'

let withData = {
  taskId: 'T-100'
  , taskCreaterName: 'mark'
  , customerName: 'henry'
}

function replace(obj, withData) {
  let result = message.slice(0)
  for (let [key, value] of Object.entries(withData)) {
    result = result.replace('${' + key + '}', value)
  }
  
  return result
}

let result = replace(message, withData)

console.log(result)

// If Object.entries is not supported
function replace(obj, withData) {
  let result = message.slice(0)
  for (let key in withData) {
    let value = withData[key]
    result = result.replace('${' + key + '}', value)
  }
  
  return result
}

Answer 3

Answer №2

To efficiently replace parts of a string with values stored in an object, you can use the .replace() method. If a value with a matching name is found in the object, it will be replaced in the string.

var message = 'Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName} and ${newVar}';
var values = {
  taskId: 'T-100',
  taskCreaterName: 'mark',
  customerName: 'henry'
};
var newStr = message.replace(/\$\{(\w+)\}/g, function(match, cont){
  return typeof values[cont] !== 'undefined' ? values[cont] : match;
})
console.log(newStr);

Answer 4

To efficiently replace parts of a string with values stored in an object, you can use the .replace() method. If a value with a matching name is found in the object, it will be replaced in the string.

var message = 'Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName} and ${newVar}';
var values = {
  taskId: 'T-100',
  taskCreaterName: 'mark',
  customerName: 'henry'
};
var newStr = message.replace(/\$\{(\w+)\}/g, function(match, cont){
  return typeof values[cont] !== 'undefined' ? values[cont] : match;
})
console.log(newStr);

Answer 5

Answer №3

No action is required on your part. JavaScript will automatically swap out the variables with their values during runtime.

Answer 6

No action is required on your part. JavaScript will automatically swap out the variables with their values during runtime.

Answer 7

Answer №4

If you're seeking a straightforward approach, consider the following solution:

const taskID = 'T-200';
const creatorName = 'Alex';
const clientName = 'Sarah';

const message = `Task ${taskID} was assigned by ${creatorName} for customer ${clientName}`;

The variable message will hold "Task T-200 was assigned by Alex for customer Sarah".

Answer 8

If you're seeking a straightforward approach, consider the following solution:

const taskID = 'T-200';
const creatorName = 'Alex';
const clientName = 'Sarah';

const message = `Task ${taskID} was assigned by ${creatorName} for customer ${clientName}`;

The variable message will hold "Task T-200 was assigned by Alex for customer Sarah".

Answer 9

Answer №5

If the variable T in your code holds a specific value, which has not been disclosed, I will assume it contains a valid Integer.

let T = parseInt(Math.random() * 1000);

let taskId = T-100;
let taskCreaterName = 'mark';
let customerName = 'henry';

//assuming T-100 is a result of an expression, you would do something like:
console.log(`Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName}`);

//assming T-100 is a litral string, then you don't need to parse it at all
console.log(`Task T-100 assigned by ${taskCreaterName} for customer ${customerName}`);

Answer 10

If the variable T in your code holds a specific value, which has not been disclosed, I will assume it contains a valid Integer.

let T = parseInt(Math.random() * 1000);

let taskId = T-100;
let taskCreaterName = 'mark';
let customerName = 'henry';

//assuming T-100 is a result of an expression, you would do something like:
console.log(`Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName}`);

//assming T-100 is a litral string, then you don't need to parse it at all
console.log(`Task T-100 assigned by ${taskCreaterName} for customer ${customerName}`);

Answer 11

Answer №6

If you're looking to replace specific placeholders in a string with dynamic values, one approach is to use String#replace along with a custom callback function and eval. In this example, the placeholders are denoted by ${}, making it easy to target them using regular expressions.

var message = 'Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName}';
let taskId = 'T-100';
let taskCreaterName = 'mark';
let customerName = 'henry';

var newMessage = message.replace(/\${([\w]+)}/g, function(match, name){
  return eval(name);
})

console.log(newMessage);

Answer 12

If you're looking to replace specific placeholders in a string with dynamic values, one approach is to use String#replace along with a custom callback function and eval. In this example, the placeholders are denoted by ${}, making it easy to target them using regular expressions.

var message = 'Task ${taskId} assigned by ${taskCreaterName} for customer ${customerName}';
let taskId = 'T-100';
let taskCreaterName = 'mark';
let customerName = 'henry';

var newMessage = message.replace(/\${([\w]+)}/g, function(match, name){
  return eval(name);
})

console.log(newMessage);

What is the best way to swap out words in a sentence with their corresponding values using JavaScript?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

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