在更多输入字段中设置值

Question

How can I set values (default values) in more input fields by JavaScript or jQuery? Thank you.

<form method="" action="">
Name: <input type="text" id="id1" value="<?php $value; ?>" placeholder="Your name"> <br><br>
Surname: <input type="text" id="id1" value="<?php $value; ?>" placeholder="Your surname"> <br><br>
Email: <input type="text" id="id1" value="<?php $value; ?>" placeholder="Your email"> <br><br>
</form>

Answer 1

Iterate over all inputs, and then set the default value with element.value syntaxis.

 Array.from(document.getElementsByTagName("INPUT")).forEach(input => { input.value = "Default value has been assigned"; }); 

 Input 1: <input type="text"> Input 2: <input type="text"> Input 3: <input type="text"> 

Answer 2

You forgot echo the values. Below is updated code.

<form method="" action="">
Name: <input type="text" id="id1" value="<?php echo $value; ?>" placeholder="Your name"> <br><br>
Surname: <input type="text" id="id1" value="<?php echo $value; ?>" placeholder="Your surname"> <br><br>
Email: <input type="text" id="id1" value="<?php echo $value; ?>" placeholder="Your email"> <br><br>
</form>

Answer 3

The trick is to come up with a selector that selects all the elements that you would like to change.

Because you would like to change all the values of the text boxes, the following selector would do: $("input['type=text']") . And to change or set their value: just to: $("input['type=text']").val('value');

See a running example: https://jsfiddle.net/2od89uou/1/

Answer 4

To set the values for input fields in jQuery you can use the .val() method:

$('#id1').val("This is a value");// the selector #id1 selects all elements with id "id1"

If you want to set multiple inputs to same value you need to use another selector as id's are designed to be unique:

$('.text-input').val("Some other value"); // this will set value of all elements with class text-input