limiting input

[dinhunzvi]

i have an html form with two text boxes. one is for the product name and the other is for the price. i want the text boxes for price to allow numeric values only. is there a way of limiting user input for this text box using javascript

[radhakrishna.p]

we can achieve your functionality by using isNaN(value_of_your text feild) function of java script

the following URL gives better idea on your requirement and how to use the isNaN() function for your script code

http://javascriptexample.blogspot.in/2008/07/isnan-function.html

let me know if you have any doubts in my clarification

happy coding

[dinhunzvi]

i want the check to be done when the user is entering data into that text box not when the form is submitted

[radhakrishna.p]

there is an event called onkeypress() for the textfeild input element of html. you can call the required function on that moment like as follows

<input type="text" name="you_text_feild_name" id="you_text_feild_id" onkeypress="your_function_name()"/>

please try to call your java script function as described above

so that you will get the output as you want

let me know the status

happy coding