we use the f67172ae234cb2a1d038f7f009c25ada to limit an html input box so that it only accepts numeric inputs. by using this, we will get a numeric input field.
syntax以下是限制html输入框只接受数字输入的语法。
<input type=number>
example以下是一个示例程序，用于限制html输入框只接受数字输入 -
<!doctype html><html><center><head> <meta charset=utf-8> <meta http-equiv=x-ua-compatible content=ie=edge> <meta name=viewport content=width=device-width, initial-scale=1.0> <style> input[type=number] { width: 10%; padding: 12px 20px; margin: 8px 0; box-sizing: border-box; border: 2px solid mediumseagreen; border-radius: 4px; } </style></head><body> <h1>tutorialspoint</h1> <form action = method = get> enter your mobile number - <input type=number> <br><br> enter your area pincode - <input type=number> <br><br> <input type=submit value=submit> </form></body></center></html>
如果我们尝试输入除数字以外的任何值，它将不允许。因此，它严格只允许数字值。
examplefollowing is another example program to limit an html input box so that it only accepts numeric input -
<!doctype html><html><head> <meta charset=utf-8> <meta http-equiv=x-ua-compatible content=ie=edge> <meta name=viewport content=width=device-width, initial-scale=1.0></head><body> <form action = method = get> phone number: <input type=number name=num min=1 max=20><br> <input type=submit value=submit> </form></body></html>
after limiting the input box to number, if a user enters text and press submit button, then the following can be seen “please enter a number.”
we can also limit the value of the number input field.
在将输入框限制为数字后，如果用户输入的值大于限制值并点击提交按钮，那么将会显示以下内容：“值必须小于或等于指定的限制值（20）”
examplefollowing is another example program to limit an html input box so that it only accepts numeric input -
<!doctype html><html><head> <meta charset=utf-8> <meta http-equiv=x-ua-compatible content=ie=edge> <meta name=viewport content=width=device-width, initial-scale=1.0></head><body> <form action = method = get> <h3>select the quantity, and we cannot deliver more than 5.</h3><br> pizza<input type=number name=num min=0 max=5><br> burger<input type=number name=num min=0 max=5><br> garlic bread<input type=number name=num min=0 max=5><br> pepsi<input type=number name=num min=0 max=5><br> </form></body></html>
如果您编译并运行上述代码，它将显示4个方框，您可以将限制设置为从最小值0到最大值5。
以上就是如何限制html输入框只接受数字输入？的详细内容。