问题
I want to get the getBBox() for svg path in jquery. i tried like this
$("#"+ path id)[0].getBBox() -> returns x=0,y=0,width=0,height=0
I have added the path to an SVG element. I tried some other element in SVG, for example text node in that case it returns the some bounding box value.
How can I calculate the bounding box for a path in SVG?
<path id="container_svg_John_0" fill="none" stroke-width="3" stroke="url(#container_svg_John0Gradient)" stroke-linecap="butt" stroke-linejoin="round" d="M -2390.2 -125.8888888888889 L 0 0 M 0 0 L 251.60000000000002 -45.77777777777778 M 251.60000000000002 -45.77777777777778 L 503.20000000000005 -11.444444444444445 M 503.20000000000005 -11.444444444444445 L 629 -183.11111111111111 "/>
回答1:
getBBox is a native SVG method and isn't part of jquery so you would need to write
$("#"+ path id)[0].getBBox()
example
If you're getting a non-zero value for the example and a zero value in your code then there must be something else going on that you've not shown us.
The most likely causes are that the path is a child of <defs> i.e. you're only using it indirectly in a pattern or clipPath or alternatively the it has a display style of none in which case it wouldn't be rendered so would have no bounding box.
回答2:
The . Actually It's fixed nowgetBBox() native implementation in Webkit is buggy, you can find the bug tracker here
A solution is to use an SVG library that has it's own algorithms for calculating such matters, one of them is Raphael.js.
You could make use of Raphael's element.getBBox(), which does the same thing as the native getBBox().
回答3:
I too am having a hard time getting the JQuery syntax to work for me. This returned Uncaught TypeError: Object [object Object] has no method 'getBBox':
console.log($("#testtext").getBBox().width);
... because I had omitted the array index (thanks @Christian Vielma, below)!
However standard Javascript worked for me and I was able to display the width of the (in my case) RECT in the Chrome console:
console.log(document.getElementById("testtext").getBBox().width);
So you might try that instead.
回答4:
Try Element.getBoundingClientRect(). It's from the html DOM, but works for me on SVG elements (without much transformation).
回答5:
One thing to make sure is that your svg is added to the DOM and not detached. Also make sure that your SVG element
来源：https://stackoverflow.com/questions/16377186/get-bounding-box-for-svg-path-using-jquery