keycode

Mostly this is a sanity check. The key code for both shift keys is 16. Does that mean it is actually impossible to distinguish a left and right shift events in a browser? In newer browsers supporting DOM3 you can use event.location to check the location. In the DOM3 spec , there are 4 constants defined for location, DOM_KEY_LOCATION_STANDARD , DOM_KEY_LOCATION_LEFT , DOM_KEY_LOCATION_RIGHT , and DOM_KEY_LOCATION_NUMPAD . In this case, you can do: if (event.location === KeyboardEvent.DOM_KEY_LOCATION_LEFT){ } else if (event.location === KeyboardEvent.DOM_KEY_LOCATION_RIGHT){ } MattG Internet

I'd just like to know the range(s) of JavaScript keyCode s that correspond to typeable characters; or alternatively, the range of non-typeable (control) characters like backspace, escape, command, shift, etc. so I can ignore them. The reason I ask is calling String.fromCharCode() is resulting in odd characters for control keys. For example I get "[" for left command, "%" for left arrow. Weirdness like that. Keydown will give you the keyCode of the key pressed, without any modifications. $("#keypresser").keydown(function(e){ var keycode = e.keyCode; var valid = (keycode > 47 && keycode < 58) ||

1.取消按钮按下时的虚线框,在input里添加属性值 hideFocus 或者 HideFocus=true <input type="submit" value="提交" hidefocus="true" /> 2.只读文本框内容,在input里添加属性值 readonly <input type="text" readonly /> 3.防止退后清空的TEXT文档(可把style内容做做为类引用) <input type="text" style="behavior:url(#default#savehistory);" /> 4.ENTER键可以让光标移到下一个输入框 <input type="text" onkeydown="if(event.keyCode==13)event.keyCode=9" /> 5.只能为中文(有闪动) <input type="text" onkeyup="value=value.replace(/[ -~]/g,'')" onkeydown="if(event.keyCode==13)event.keyCode=9" /> 6.只能为数字(有闪动) <input type="text" onkeyup="value=value.replace(/[^\d]/g,'') " onbeforepaste="clipboardData

1.取消按钮按下时的虚线框,在input里添加属性值 hideFocus 或者 HideFocus=true <input type="submit" value="提交" hidefocus="true" /> 2.只读文本框内容,在input里添加属性值 readonly <input type="text" readonly /> 3.防止退后清空的TEXT文档(可把style内容做做为类引用) <input type="text" style="behavior:url(#default#savehistory);" /> 4.ENTER键可以让光标移到下一个输入框 <input type="text" onkeydown="if(event.keyCode==13)event.keyCode=9" /> 5.只能为中文(有闪动) <input type="text" onkeyup="value=value.replace(/[ -~]/g,'')" onkeydown="if(event.keyCode==13)event.keyCode=9" /> 6.只能为数字(有闪动) <input type="text" onkeyup="value=value.replace(/[^\d]/g,'') " onbeforepaste="clipboardData

跟大家分享一些关于限制input输入的知识点，欢迎指正！ 1.取消按钮按下时的虚线框,在input里添加属性值 hideFocus 或者 HideFocus=true hideFocus即隐藏聚焦，具有使对象聚焦失效的功能，其功能相当于： onFocus="this.blur()" 它的值是一个布尔值，如hideFocus=“true”，也可省略赋值直接写hideFocus。 <input type="submit" value="提交" hidefocus="true" /> 2.只读文本框内容,在input里添加属性值 readonly <input type="text" readonly /> 3.防止退后清空的TEXT文档(可把style内容做为类引用) <input type="text" style="behavior:url(#default#savehistory);" /> 4.ENTER键可以让光标移到下一个输入框 <input type="text" onkeydown="if(event.keyCode==13)event.keyCode=9" /> 5.只能为中文(有闪动) <input type="text" onkeyup="value=value.replace(/[ -~]/g,'')" onkeydown="if(event.keyCode=

1.取消按钮按下时的虚线框,在input里添加属性值 hideFocus 或者 HideFocus=true <input type="submit" value="提交" hidefocus="true" /> 2.只读文本框内容,在input里添加属性值 readonly <input type="text" readonly /> 3.防止退后清空的TEXT文档(可把style内容做做为类引用) <input type="text" style="behavior:url(#default#savehistory);" /> 4.ENTER键可以让光标移到下一个输入框 <input type="text" onkeydown="if(event.keyCode==13)event.keyCode=9" /> 5.只能为中文(有闪动) <input type="text" onkeyup="value=value.replace(/[ -~]/g,'')" onkeydown="if(event.keyCode==13)event.keyCode=9" /> 6.只能为数字(有闪动) <input type="text" onkeyup="value=value.replace(/[^\d]/g,'') " onbeforepaste="clipboardData

How to know if .keyup() is a character key (jQuery) $("input").keyup(function() { if (key is a character) { //such as a b A b c 5 3 2 $ # ^ ! ^ * # ...etc not enter key or shift or Esc or space ...etc /* Do stuff */ } }); Nivas Note: In hindsight this was a quick and dirty answer, and may not work in all situations. To have a reliable solution, see Tim Down's answer (copy pasting that here as this answer is still getting views and upvotes): You can't do this reliably with the keyup event. If you want to know something about the character that was typed, you have to use the keypress event