change image dimensions with jquery
I have a image under div id myimage. Now I want to resize it by using change. I want from select box if selected 700X7000 then image's size will be height 700px and width 700px. With out reloading the page. C开发者_如何学Goan anyone help me how can I do this?
Well, to change it, you can just set the image's width() and height():
$('#myimage').width(700); // Units are assumed to be pixels
$('#myimage').height(700);
So for you to do the drop down box, you can just set the values to be something like 100x100, 200x200, etc. and split the selected value to extract the dimensions:
var parts = '100x100'.split('x');
var width = parseInt(parts[0], 10); // 10 forces parseInt to use base 10
var height = parseInt(parts[1], 10);
The condition is where you can say item selected.
if( condition ) {
$('div#myimage img').css({'width' : '700px' , 'height' : '700px'});
}
else {
$('div#myimage img').css({'width' : '150px' , 'height' : '150px'});
};
Below are ways to check to see if the box is selected:
// First way
$('#checkBox').attr('checked');
// Second way
$('#checkBox').is(':checked');
Example working:
if( $('#checkBox').attr('checked') ) {
$('div#myimage img').css({'width' : '700px' , 'height' : '700px'});
}
else {
$('div#myimage img').css({'width' : '150px' , 'height' : '150px'});
};
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
$(document).ready(function () {
$("#photograph").click(function () {
$("img").animate({
height: '+=5px',
width: '+=5px'
});
});
});
}
</script>
</head>
<body>
<div>
<img src="photo/grass.jpg" id="photograph" style="width:304px;height:228px;"/>
</div>
</body>
</html>
Fiddle : https://jsfiddle.net/cmxevnp0/3/
Or
Function send object
<img onLoad="ozhpixel(this)"
function ozhpixel(imaj){
$(imaj).width(100); // Units are assumed to be pixels
$(imaj).height(50);}
write
max-width:100%
in img tag
加载中,请稍侯......
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