Check if some of the characters are numbers

[user_ms]

Extract characters and check if the extracted value is a number.

If there is the following value, I want to extract the first 3 characters and determine whether the value is a number.
123-456

If there is no number, print an error message in the field.

Other conditions
Use Client Script
Check with onSubmit

Please let me know if you know.

[Harish KM]

HI @user_ms you can use the below script to check 1st 3 characters

 var sd = g_form.getValue('short_description');

  var strFirstThree = sd.substring(0,3);// check 1st 3 characters

  alert(strFirstThree);

  if(!isNaN(strFirstThree))

  {

    alert("number"); // if 3 char are numbers

  }

  else{

    alert("not a number"); // not number

  }

[Sandeep Rajput · Accepted solution]

@user_ms Here is the script 

function onSubmit() {
   //Type appropriate comment here, and begin script below
	var textBox= g_form.getValue('text_box');
	var pattern = /^\d{3}-/;
	if(pattern.test(textBox)){
		g_form.showFieldMsg('text_box','correct');
	}
	else{
		g_form.showFieldMsg('text_box','incorrect');
	}
	return false;
}

[Sandeep Rajput]

@user_ms Any further questions on this topic?

[user_ms]

@Sandeep Rajput 

Sorry for the late confirmation.

I was able to do it that way.

I don't have any further questions on this topics.

Thank you for your help.