jQuery或javascript阻止来自输入按键的事件

Question

CODE:

 var appender = $('<input class="form-control" placeholder="Search" id="search_made" type="text">') appender.find('#search_made').on('keypress', function(e) { e.preventDefault() console.log('keypress!') if (e.keyCode == 13 && !e.shiftKey) { console.log('not shift enter') var passed_value = $(this).val() if (passed_value === '') { console.log('nothing was passed on input tag') return false; } console.log('passed value: ' + passed_value) } }) $('body').append(appender) 

I want to add input tag dynamically by jQuery.

Using those code, I can only add input tag seemingly but other functions that has to be bound was not bound well.

So when I type some words on input tag and click enter key , It refreshes page but does not execute any console.log() lines.

How can I fix it to make it do other bound functions(include console.log() ) well?

Answer 1

Change the selector from:

appender.find('#search_made').on('keypress', function(e) {

To

$(document).on('keypress','#search_made', function(e) {

OR: Simply

appender.on('keypress', function(e) {

Working Code Example:

 var appender = $('<input class="form-control" placeholder="Search" id="search_made" type="text">') $(document).on('keypress','#search_made', function(e) { e.preventDefault() console.log('keypress!') if (e.keyCode == 13 && !e.shiftKey) { console.log('not shift enter') var passed_value = $(this).val() if (passed_value === '') { console.log('nothing was passed on input tag') return false; } console.log('passed value: ' + passed_value) } }) $('body').append(appender) 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>