I am trying to create JavaScript pattern to see if input value is date, my date format is 2015/Jan/01, I have tried doing this \d{4}/\[A-Za-z]{3}/\d{1,2} but that did not work, Please help me in fixing it.
function SetValue() {
// var newdata = document.getElementById('txtCellEditor').value;
var myString = txtCellEditor.value;
if (myString.match(\d{4}/\[A-Za-z]{3}/\d{1,2})) {
alert("'myString' is date.");
}
Your regex is incorrect
regex i.e. / at the start and end of regex^ and $ to check exact match instead of substring/ by preceding them with \[test() instead of matchVisualization
var regex = /^\d{4}\/[a-z]{3}\/\d{1,2}$/i;
function SetValue() {
var myString = document.getElementById('date').value;
if (regex.test(myString)) {
console.log("'myString' is date.");
} else {
console.log("'myString is not date.");
}
}<input type="text" id="date" onkeyup="SetValue()" />
Most of the actual regular expression is fine, but you've forgotten to make it a regular expression by putting it in /s! (And you've escaped one of the / [but backward], but not the other.)
if (myString.match(/\d{4}\/[A-Za-z]{3}\/\d{1,2}/)) {
// ^ ^^ ^^ ^
// regex quote-/ \--escaped--/ \-- regex quote
