如何创造价值 <input type=“text”> 用jQuery选中？

Question

Suppose the jQuery object of the input is $input.

How to make its value selected(make it highlighted)?

Answer 1

Let's say the id of the element is anInput , you should be able to do the following:

var $input = $("#anInput");
$input[0].select();    

$input represents the wrapped set or jQuery object, as you put it. The zeroeth index of this set is the first DOM element matched by your selector (there is only one in this case). With that element in hand, the select function should select its contents.

Is this what you need?

Answer 2

Try this:

$('input, select, textarea').each(function() {
    $(this).focus(function() {
        if (this.select) {
            this.select();
        }
    });
});

Answer 3

To focus the element you use

$(input).focus();

To highlight it you create an extra highligh CSS class that does the Highlighting you want (or you directly modify the element style) in the onfocus and blur events.

$(input).focus(function() { $(this).addClass("highlight"); });
$(input).blur(function() { $(this).removeClass("highligh"); });