如何禁止number输入框手动键入内容，仅保留上下箭头调节功能

Got it, let's figure this out for you! You want to keep the number input's up/down arrow controls working (with that max=10 restriction applying to the arrows) but stop users from manually typing or pasting any values into the field—without making it fully readonly (which would disable the arrows entirely).

Here are your options, including a near-no-code solution that fits your preference:

Near No-Code (Inline Attributes) #

You can add simple inline event handlers directly to your input tag to block typing and pasting, while preserving arrow functionality and the max limit:

<input type="number" max="10" onkeydown="return false" onpaste="return false">

• onkeydown="return false" stops any keyboard input (typing numbers, letters, etc.)
• onpaste="return false" blocks users from pasting values into the field
• The max="10" will still restrict how high the arrow can take the value, and the arrows themselves stay fully functional.

Cleaner JavaScript Approach (For Separation of Concerns) #

If you’d rather keep your HTML free of inline scripts, you can use a small JavaScript snippet to target the input and prevent unwanted interactions:

// Wait for the page to load first
document.addEventListener('DOMContentLoaded', () => {
  const restrictedNumberInput = document.querySelector('input[type="number"]');
  
  // Block keystrokes
  restrictedNumberInput.addEventListener('keydown', (event) => {
    event.preventDefault();
  });
  
  // Block pasting
  restrictedNumberInput.addEventListener('paste', (event) => {
    event.preventDefault();
  });
});

This does the exact same thing as the inline version but keeps your markup cleaner, which is better for maintainability if you have multiple inputs or complex code.

内容的提问来源于stack exchange，提问作者Sukces Tuber