如何将javascript变量值分配给文本框 - 在PHP中

Question

I am trying to display some javascript variable on my html page.

var resultDis = 10;
document.getElementById("totalAmount").value= resultDis; 

using

<input type="number" id="totalAmount" name="totalAmount" 
class="form-control" ng-model="form.totalAmount" 
placeholder="Total Amount" value="">

Here totalAmount : id of text those i want assign the value

But on the form submission, null value goes of that textbox.

Answer 1

将id="totalAmount"添加到文本框中。

<input id="totalAmount" ...> 

Answer 2

As you have in your input ng-model="form.totalAmount" you can update the value with AngularJS:

 angular .module('MyApp', []) .controller('MyController', function($scope) { var resultDis = 10; $scope.form = {}; // value assignment to form.totalAmount model $scope.form.totalAmount = resultDis; }); 

 <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <div ng-app="MyApp" ng-controller="MyController"> <input type="number" id="totalAmount" name="totalAmount" class="form-control" ng-model="form.totalAmount" placeholder="Total Amount" value=""> </div> 

Note that now the input will show the variable resultDis value on the view.. But, how are you handling the form submit? Can you update your question with more code?

Answer 3

如果您在Visual Studio中工作，则必须使用ClientID：

var resultDis = 10; document.getElementById("<%=totalAmount.ClientID%>").value= resultDis;