输入框需要以下验证：
1）长度输入框最多需要3个整数长度值（不允许小数）
2）高度输入框应该取3个整数，小数最多2个位置它第一次工作正常，但点击+按钮（打开新行1附近）相同的输入字段正在打开但现在：在新的即使我对输入框使用相同的类，即使新添加的输入框占用任意数量的数字和字符，框验证也不起作用。
在键盘功能中，它正在工作，但是如果用户按下任何键，它对新打开的行不起作用，那么在这两种情况下如何使其在按键上工作;在keyup验证工作正在工作，但在按键上它不起作用
var app = angular.module('Calc', []);
var inputQuantity = [];
$(function() {
$(".form-control").each(function(i) {
inputQuantity[i]=this.defaultValue;
$(this).data("idx",i); // save this field's index to access later
});
$(".form-control").on("keyup", function (e) {
var $field = $(this),
val=this.value,
$thisIndex=parseInt($field.data("idx"),10); // retrieve the index
// window.console && console.log($field.is(":invalid"));
// $field.is(":invalid") is for Safari, it must be the last to not error in IE8
if (this.validity && this.validity.badInput || isNaN(val) || $field.is(":invalid") ) {
this.value = inputQuantity[$thisIndex];
return;
}
if (val.length > Number($field.attr("maxlength"))) {
val=val.slice(0, 5);
$field.val(val);
}
inputQuantity[$thisIndex]=val;
});
});
app.controller('Calc_Ctrl', function ($scope, $http) {
$scope.choices = [{id : 'choice1', l2 : 0, b2 : 0}];
$scope.areas = [{id : 'choice2', total : 0}];
$scope.addNewChoice = function () {
var newItemNo = $scope.choices.length + 1;
$scope.choices.push({
'id' : 'choice' + newItemNo, l2 : 0, b2 : 0
});
};
$scope.removeChoice = function () {
var lastItem = $scope.choices.length - 1;
if (lastItem !== 0) {
$scope.choices.splice(lastItem);
}
};
});<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="newscript.js"></script>
<body>
<div ng-app="Calc" ng-controller="Calc_Ctrl">
<div data-ng-repeat="choice in choices" class="col-md-12 col-sm-12 col-xs-12 bottom-line no-gap">
<h6>Open New Row {{$index + 1}}
<button type="button" class="btn btn-default pull-right btn-right-gap btn-red" aria-label="Left Align" ng-click="addNewChoice()" style="margin-top: -5px;" id="plus_icon">
<span class="glyphicon glyphicon-plus" aria-hidden="true"></span>
</button>
</h6>
<div class="row walls top-gap">
<div class="form-group col-md-3 col-sm-3 col-xs-12">
<label for="length">Length :</label>
<input type="number" class="form-control text-red bold" id="length" ng-model="choice.l2" min="0" max="999" maxlength="6" step="0.00">
</div>
<div class="form-group col-md-3 col-sm-3 col-xs-12">
<label for="height">Height :</label>
<input type="number" class="form-control text-red bold" id="height" ng-model="choice.b2" min="0" max="999" maxlength="6" step="0.01">
</div>
<button type="button" class="btn btn-default pull-right btn-red" aria-label="Left Align" ng-click="removeChoice()" id="minus_icon">
</button>
</div>
</div>
</div>
</body>
</html>
答案 0 :(得分：0)
要为我们需要稍微更改侦听器定义的所有字段触发 keyup 事件，选择器.form-control应在on()内定义为子选择器＆amp; document作为主要选择器：
$(document).on("keyup",".form-control", function (e) {
// listener code
});
keypress 事件的行为与 keyup 事件不同。按下的每个按键都会触发按键;就在字段中设置值之前。对于发布的每个密钥，都会触发 keyup 事件。在字段中设置值之后。相同的方法不适用于 keypress 。
var app = angular.module('Calc', []);
var inputQuantity = [];
$(function() {
$(".form-control").each(function (i) {
inputQuantity[i] = this.defaultValue;
$(this).data("idx", i); // save this field's index to access later
});
$(document).on("keypress", ".form-control", function (e) {
if (e.charCode!=0){
var $field = $(this),
val = this.value + '' + String.fromCharCode(e.charCode), pattern;
if (this.step == 0.00)
pattern = /[^0-9]/
else
pattern = /[^0-9.]/
if (val > parseInt(this.max, 10) || pattern.test(val) || (val.match(/\./) && (val.match(/\./g).length > 1 || val.replace(/\d+\./, '').length > 2))) {
e.preventDefault();
}
}
});
$(document).on("keyup",".form-control", function (e) {
var $field = $(this),
val=this.value,
$thisIndex=parseInt($field.data("idx"),10);
if (parseInt(val,10) > parseInt(this.max, 10) ) {
this.value = inputQuantity[$thisIndex];
return;
}
if (val.length > Number($field.attr("maxlength"))) {
val=val.slice(0, 5);
$field.val(val);
}
inputQuantity[$thisIndex]=val;
});
});
app.controller('Calc_Ctrl', function ($scope, $http) {
$scope.choices = [{id : 'choice1', l2 : 0, b2 : 0}];
$scope.areas = [{id : 'choice2', total : 0}];
$scope.addNewChoice = function () {
var newItemNo = $scope.choices.length + 1;
$scope.choices.push({
'id' : 'choice' + newItemNo, l2 : 0, b2 : 0
});
};
$scope.removeChoice = function () {
var lastItem = $scope.choices.length - 1;
if (lastItem !== 0) {
$scope.choices.splice(lastItem);
}
};
});<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="newscript.js"></script>
<body>
<div ng-app="Calc" ng-controller="Calc_Ctrl">
<div data-ng-repeat="choice in choices" class="col-md-12 col-sm-12 col-xs-12 bottom-line no-gap">
<h6>Open New Row {{$index + 1}}
<button type="button" class="btn btn-default pull-right btn-right-gap btn-red" aria-label="Left Align" ng-click="addNewChoice()" style="margin-top: -5px;" id="plus_icon">
<span class="glyphicon glyphicon-plus" aria-hidden="true"></span>
</button>
</h6>
<div class="row walls top-gap">
<div class="form-group col-md-3 col-sm-3 col-xs-12">
<label for="length">Length :</label>
<input type="text" class="form-control text-red bold" id="length" ng-model="choice.l2" min="0" max="999" maxlength="6" step="0.00">
</div>
<div class="form-group col-md-3 col-sm-3 col-xs-12">
<label for="height">Height :</label>
<input type="text" class="form-control text-red bold" id="height" ng-model="choice.b2" min="0" max="999" maxlength="6" step="0.01">
</div>
<button type="button" class="btn btn-default pull-right btn-red" aria-label="Left Align" ng-click="removeChoice()" id="minus_icon">
</button>
</div>
</div>
</div>
</body>
</html>