Strings

Template Strings/Literals

• literals delimited with backtick (`) characters, allowing for multi-line strings, string interpolation with embedded expressions

`string text`
 
`string text line 1
 string text line 2`
 
`string text ${expression} string text`
 
tagFunction`string text ${expression} string text`

Example

function renderLeads() {
  let listItems = "";
 
  for (let i = 0; i < myLeads.length; i++) {
    console.log(myLeads[i]);
    // listItems +=
    //   "<li>" +
    //   "<a href=" +
    //   myLeads[i] +
    //   ' target="_blank" rel="noopener noreferrer">' +
    //   myLeads[i] +
    //   "</a>" +
    //   "</li>";
    listItems += `
      <li>
        <a href="${myLeads[i]}" target="_blank" rel="noopener noreferrer">
          ${myLeads[i]}
        </a>
      </li>`;
  }
  ulEl.innerHTML = listItems;
}

• Using String literals simplifies things!

Converting Strings to numbers

• Number
  • a built-in JS function that converts Strings into numbers

const numOneInput = document.getElementById('num1'); // form
const numTwoInput = document.getElementById('num2'); // form
 
const numOneVal = Number(numOneInput.value);
const numTwoVal = Number(numTwoInput.value);