How to use js if statement judgment text box input the first letter is capitalized?-CodePudding

CodePudding user response:

 if (/^ [a-z]/. The test (n1)) {
Alert (" right "); 
} else {
Alert (" error "); 
}

CodePudding user response:

{don't judge can use CSS text - transform: uppercase}

Determine whether to AB

CodePudding user response:

If it's not true then you can go to the first character to uppercase and compares the characters of
The console. The log (' ABC '. The charAt (0)==='ABC'. The charAt (0). The toUpperCase ())

CodePudding user response:

Bosses with what the editor, pretty

CodePudding user response:

reference 4 floor of the unknown fate of reply:

bosses with what the editor, pretty

hbuilderx