- Extended ':contains'-selector that ignores case while comparing text
$.expr[':'].containsIgnoreCase = function (n, i, m) {
/// <summary>
/// This is an overridden selector of Jquery selector - ":contains".
/// This selector works as it is alike ":contains" with additional ability of case insensitivity.
/// </summary>
return jQuery(n).text().toUpperCase().indexOf(m[3].toUpperCase()) >= 0;
};
Update:
In jQuery 1.8 the API for this changed, the jQuery 1.8+ version of this would be:
jQuery.expr[":"].Contains = jQuery.expr.createPseudo(function(arg) {return function( elem ) {return jQuery(elem).text().toUpperCase().indexOf(arg.toUpperCase()) >= 0;};});
- Extended 'attr'-function that appends value, instead replace
/*
* .attrExtend(attrName, attrValue)
* Adds the specified attrValue for specified attrName to each of the set of matched HTML elements.
*/
$.fn.attrExtend = function (attrName, attrValue) {
/// <summary>
/// Adds the specified attrValue for specified attrName to each of the set of matched HTML elements.
/// </summary>
/// <param name="attrName" type="string">Attribute name, e.g. class</param>
/// <param name="attrValue" type="string">Attribute value, e.g. Testclass</param>
$(this).attr(attrName, function (index, existingAttrValues) {
var re = new RegExp(attrValue, 'g');
if (existingAttrValues
&& typeof (existingAttrValues) == 'string') {
if (existingAttrValues.match(re) != null
&& existingAttrValues.match(re).length > 0) {
return existingAttrValues;
}
else {
return existingAttrValues + ' ' + attrValue;
}
}
else {
return attrValue;
}
});
return this;
};
- Extended 'removeAttr'-function that removes value, instead remove whole attribute
/*
* .removeAttrExtend(attrName, attrValue)
* Removes the specified attrValue for specified attrName to each of the set of matched HTML elements.
*/
$.fn.removeAttrExtend = function (attrName, attrValue) {
/// <summary>
/// Removes the specified attrValue for specified attrName to each of the set of matched HTML elements.
/// </summary>
/// <param name="attrName" type="string">Attribute name, e.g. class</param>
/// <param name="attrValue" type="string">Attribute value, e.g. Testclass</param>
$(this).attr(attrName, function (index, existingAttrValues) {
var re = new RegExp(attrValue, 'g');
if (existingAttrValues
&& typeof (existingAttrValues) == 'string') {
return existingAttrValues.replace(re, '');
}
else {
return existingAttrValues;
}
});
return this;
};
Update:
- Extended version of JavaScript method - "hasOwnProperty", that checks if JavaScript object has property that contains string specified by "likeString".
$.hasOwnPropertyLike = function (obj, likeString) {
/// <summary>
/// This is an extended version of JavaScript method - "hasOwnProperty".
/// This method checks if JavaScript object has property that contains string specified by "likeString"
/// </summary>
/// <remarks>
/// Creator: Vihang Shah
/// Created on: 21-Apr-2015
/// Modification History:
/// Modified by | Date | Description
///
/// </remarks>
return ($.propertiesLike(obj, likeString).length > 0);
}
- Method enlists property, JavaScript object has and those contains string specified by "likeString", and returns the list of property-names.
$.propertiesLike = function (obj, likeString) {
/// <summary>
/// This method enlists property, JavaScript object has and those contains string specified by "likeString",
/// and returns the list of property-names
/// </summary>
/// <remarks>
/// Creator: Vihang Shah
/// Created on: 21-Apr-2015
/// Modification History:
/// Modified by | Date | Description
///
/// </remarks>
var properties = [];
$.each(obj, function (propertyKey, property) {
if (obj.hasOwnProperty(property)
&& propertyKey.toLowerCase().indexOf(likeString.toLowerCase()) >= 0) {
properties.push(propertyKey);
}
});
return properties;
}
- Javascript : Getting and Setting Caret Position in Textarea
$.fn.getCaret = function () { // adapted from http://blog.vishalon.net/index.php/javascript-getting-and-setting-caret-position-in-textarea
var ctrl = this[0];
var CaretPos = 0; // IE Support
if (document.selection) {
ctrl.focus();
var Sel = document.selection.createRange();
Sel.moveStart('character', -ctrl.value.length);
CaretPos = Sel.text.length;
} else if (ctrl.selectionStart || ctrl.selectionStart == '0') { // Firefox support
CaretPos = ctrl.selectionStart;
}
return (CaretPos);
};
- priceField
$.fn.priceField = function () {
$(this).keydown(function (e) {
var val = $(this).val();
var code = (e.keyCode ? e.keyCode : e.which);
var nums = ((code >= 96) && (code <= 105)) || ((code >= 48) && (code <= 57)); //keypad || regular
var backspace = (code == 8);
var specialkey = (e.metaKey || e.altKey || e.shiftKey);
var arrowkey = ((code >= 37) && (code <= 40));
if (specialkey && !arrowkey)
return false;
var Fkey = ((code >= 112) && (code <= 123));
var decimal = ((code == 110 || code == 190) && val.indexOf('.') == -1);
// UGLY!!
var misckey = (code == 9) || (code == 144) || (code == 145) || (code == 45) || (code == 46) || (code == 33) || (code == 34) || (code == 35) || (code == 36) || (code == 19) || (code == 20) || (code == 92) || (code == 93) || (code == 27);
var properKey = (nums || decimal || backspace || specialkey || arrowkey || Fkey || misckey);
var properFormatting = backspace || specialkey || arrowkey || Fkey || misckey || ((val.indexOf('.') == -1) || (val.length - val.indexOf('.') < 3) || ($(this).getCaret() < val.length - 2));
if (!(properKey && properFormatting)) {
return false;
}
});
$(this).blur(function () {
var val = $(this).val();
if (val === '') {
$(this).val('0.00');
} else if (val.indexOf('.') == -1) {
$(this).val(val + '.00');
} else if (val.length - val.indexOf('.') == 1) {
$(this).val(val + '00');
} else if (val.length - val.indexOf('.') == 2) {
$(this).val(val + '0');
}
});
return $(this);
};
