Javascript jquery - 如何向此 jquery 代码库添加警报消息？
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jquery - How do I add an alert message to this jquery code base?
提问by user1176783
The Question
问题
To help avoid end-user confusion, I want to add an alert message that pops up if/when the user clicks any other key ["alert('Only Numerical data allowed')"]. So if they press the 'k' the above message will pop up. Can anyone see how to set this code within this code base
为了帮助避免最终用户混淆，我想添加一条警告消息，当用户单击任何其他键时/当该消息弹出 ["alert('Only Numerical data allowed')"]。因此，如果他们按“k”，则会弹出上述消息。谁能看到如何在此代码库中设置此代码
- jsfiddle: http://jsfiddle.net/EN8pT/4/
- jsfiddle：http: //jsfiddle.net/EN8pT/4/
The Code
编码
jquery:
查询：
$('input.numberinput').bind('keypress', function (e) {
var w = e.which;
return (w != 8 && w != 0 && (w < 48 || w > 57) && w != 46) ? false : true;
});
?
?
html
html
<div class="containercontent">
<div class="label">Enter a number:</div>
<input type="text" name="txtNumber1" id="txtNumber1" value="" class="numberinput" />
<div class="label">Enter a number:</div>
<input type="text" name="txtNumber2" id="txtNumber2" value="" class="numberinput" />
</div>
采纳答案by Daniel Li
Hello again :) I can help you out with this as well:
你好 :) 我也可以帮你解决这个问题：
$(document).ready(function () {
$('input.numberinput').bind('keypress', function (e) {
var allow = (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57) && e.which != 46) ? false : true;
if (!allow) {
alert('Only Numerical data allowed');
}
return allow;
});
});?
JSFiddle: http://jsfiddle.net/EN8pT/3/
JSFiddle：http: //jsfiddle.net/EN8pT/3/
Enjoy and good luck!
享受并祝你好运！
回答by Suave Nti
Simple :
简单的 ：
$(document).ready(function () {
$('input.numberinput').bind('keypress', function (e) {
if((e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57) && e.which != 46) )
{
alert('Only Numbers');
return false;
}
else{
return true;
}
});
});
