Problem: All methods of FormData do not work/compatible with Internet Explorer. The only method that is successful is 'append'. but suppose you want to override values of specific keys but in that scenarios 'set' and 'delete' methods will not work on Internet Explorer.
Solution: You may use below code that will work on IE.
var form = $('form')[0];
var formData = new FormData();
var inputs = form.getElementsByTagName('input'); //for input box
var inputsList = Array.prototype.slice.call(inputs);
inputsList.forEach(
function (i) {
if (i.name !== 'excludedName') {
formData.append(i.name, i.value);
}
}
);
formData.append('excludedName', 'value you want to set');
Note: for 'select' and 'textarea' use:
var selects = form.getElementsByTagName('select');
var textareas = form.getElementsByTagName('textarea');
JavaScript :
We can disable or enable an input box by setting property true or false respectively by using below code.
Code of input box
Name: <input type="text" id="myName">
To Disable input box.
document.getElementById("myName").disabled = true;
To Enable input box.
document.getElementById("myName").disabled = false;
jQuery :
If you are using jQuery 1.6+ then you should use the .prop() function to disable or enable input field.
$("input").prop('disabled', true);
$("input").prop('disabled', false);
Above code will disable all the input fields, if you want to disable or enable particular field, then you should use class or id of that particular input field.
Name: <input type="text" id="myName" class="myName">
$("#myName").prop('disabled', true); // using id of input box
$(".myName").prop('disabled', false); // using class of input box
If you are using jQuery 1.5 or below then you should use the .attr() function.
To disable input field:
$("input").attr('disabled', 'disabled');
To enable input field:
$("input").removeAttr('disabled');
There is also .removeProp like .removeAttr in jQuery 1.6 but we should not use it because once you use removeProp you can not again disable it.
Following is script by which you can put check for float value.
html input field on which you want to put check for float value:
<input class="checkfloat" type="text">
Script for Float Value check:
$(".checkfloat").on("keypress keyup",function (event) {
$(this).val($(this).val().replace(/[^0-9\.]/g,''));
if ((event.which != 46 || event.which == 8 || event.which == 9 || $(this).val().indexOf('.') != -1)
&& ((event.which < 48 || event.which > 57))) {
event.preventDefault();
}
});
Here, we are working with textbox, button and pop up message box where we are showing textbox value in message box on same page on search button click using jquery.
index.jsp
put this script inside <head> tag
put this code inside <body> tag
Output:
Also Read : Jquery : Show label value on alert and browser console
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