?? validatefloat.js
字號:
/*$RCSfile: validateFloat.js,v $ $Revision: 1.11 $ $Date: 2004/03/28 16:53:21 $ */
/**
* Check to see if fields are a valid float.
* Fields are not checked if they are disabled.
* <p>
* @param form The form validation is taking place on.
*/
function validateFloat(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
var formName = form.getAttributeNode("name");
oFloat = eval('new ' + formName.value + '_FloatValidations()');
for (x in oFloat) {
var field = form[oFloat[x][0]];
if ((field.type == 'hidden' ||
field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') &&
field.disabled == false) {
var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}
if (value.length > 0) {
// remove '.' before checking digits
var tempArray = value.split('.');
//Strip off leading '0'
var zeroIndex = 0;
var joinedString= tempArray.join('');
while (joinedString.charAt(zeroIndex) == '0') {
zeroIndex++;
}
var noZeroString = joinedString.substring(zeroIndex,joinedString.length);
if (!isAllDigits(noZeroString)) {
bValid = false;
if (i == 0) {
focusField = field;
}
fields[i++] = oFloat[x][1];
} else {
var iValue = parseFloat(value);
if (isNaN(iValue)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oFloat[x][1];
bValid = false;
}
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
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