Keys for Hands-On

• Be able to check pattern:
  For example, p = uName.search(/^[A-Z][a-z]+$/)
• Be able to get user's input:
  1. Input from a prompt function
  2. Input from text box of a form:

     var uName = document.getElementById("uName").value;

• How to send html's form input to javaScript?

  <input type="button" id="done" value="DONE"
            onclick = "check()" />

• Keep checking a correct format:
  1. A while loop for prompt function
  2. A checking function with if statement and return false;
     when the format is incorrect. For example,

     p = variable.search(/...../);
     if (p != 0) {
           alert("Enter ...., not .....");
           return false;
        }

• Be able to create a function to do calculations
• Be able to block user entering results

  <input type="text" name="...", id="..." size ="6" 
               onfocus = "this.blur();"/>

• Be able to write a result in the form box by an assignment statement:

  document.getElementById("....").value = ....