validation.js

来自「ORACLE AQ sample 演示的如何出列」· JavaScript 代码 · 共 57 行

// -----------------------------------------------------------------------------
// Generic Form Validation
//
// -----------------------------------------------------------------------------

  
  // This function trims the input String. It removes the leading and trailing
  // spaces from the String.
  function trim(strText) {
    // this will get rid of leading spaces
    while (strText.substring(0,1) == ' ')
      strText = strText.substring(1, strText.length);
    // this will get rid of trailing spaces
    while (strText.substring(strText.length-1,strText.length) == ' ')
      strText = strText.substring(0, strText.length-1);
    return strText;
  }

  
  
  // This function checks and tells if the field is Empty or not
  // It returns true if the text in the fieldName given is empty and false if it is not
  function isEmpty(strText){
	var flag=false;
	
	var trimmedText=trim(strText);
	if(trimmedText.length < 1){
		
		flag=true;
	}
	return flag;
  }
	
  // This function checks and tells if the field contains numbers greater than zero.
  // It returns true if the text contains a number greater than zero or false otherwise.
  function isNumber(strText){
   	val=new Object(trim(strText));
  	var flag=true;
  	if(isNaN(val)){
  			flag=false;
  	}else {
  			if((val < 0) || (val == 0)){
  			  flag=false;
  			}
  	}
  	return flag;
   }

  // This function checks and tells if the character sent is present in the text or not.
  // It returns true if the character is present and false otherwise.
  function isCharPresent(specialChar,strText){
	var flag=false;
  	if(trim(strText).indexOf(specialChar)!=-1){
	  flag=true;
  	}
     return flag;
  }