How to pop up prompt repeatedly in js

To repeatedly pop up the prompt() method of JavaScript, you need to use a loop or recursion: 1. Loop: use a while loop to continuously pop up the dialog box until the user cancels or enters an empty string; 2. Recursion: use a recursive function, automatically Calls itself until the user cancels or enters an empty string.

How to pop up prompt repeatedly in JavaScript

Use JavaScript's prompt() method. Repeatedly pops up a dialog box to collect user input. To do this, you need to use loops or recursion.

Method 1: Use a loop

<code class="javascript">while (true) {
  const input = prompt("请输入内容：");
  if (input === null || input === "") {
    break;
  }
  console.log(`用户输入：${input}`);
}</code>

This loop will continuously pop up the prompt() dialog box until the user clicks the cancel button or does not enter anything content.

Method 2: Use recursion

<code class="javascript">function promptRecursive() {
  const input = prompt("请输入内容：");
  if (input === null || input === "") {
    return;
  }
  console.log(`用户输入：${input}`);
  promptRecursive();
}

promptRecursive();</code>

This recursive function will automatically call itself until the user clicks the cancel button or enters nothing.

Note:

• For method 1, you need to manually check whether the user clicked the cancel button or entered an empty string to end the loop.
• For method 2, the recursion will run until the user clicks the cancel button or enters nothing. Therefore, in actual use, a condition needs to be used to determine when to end the recursion.

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