使动态创建的多个SVG响应

Question

I've created svg elements for titles. I dynamically create these elements with jQuery. I want to use this element in different places and I want them to be responsive. When I use $(window).resize function, browser gets stuck.

Here is my code:

 function widgetTitle() { $(".title-svg").each(function(i, item) { item = $(item); $(".svgWidget", item).css("width", item.width() + 17); var a = item.outerWidth() + 17; var constantPoint1 = "0.83 0.56 15.83 22.56 "; var constantPoint2 = " 22.56 "; var constantPoint3 = " 50.56"; var changePoint = a - 2; var points = constantPoint1 + changePoint + constantPoint2 + changePoint + constantPoint3; var viewBox = "0 0 " + a + " 50.56"; $(".svgWidget polyline", item).attr("points", points); $(".svgWidget", item).attr("viewBox", viewBox); }); } widgetTitle(); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div style="width: 80%; position: relative;margin-bottom: 50px"> <div class="title-svg" style="width: 100%;position: absolute;top: 10px;"> <svg class="svgWidget" data-name="svgWidget" xmlns="http://www.w3.org/2000/svg"> <linearGradient id="firstGradient" x="100%" y="100%"> <stop offset="0" stop-color="yellow"> <animate attributeName="stop-color" values="green;teal;purple;orange;red" dur="10s" from="0" to="100%" repeatCount="indefinite"/> </stop> <stop offset=100 stop-color="purple"> <animate attributeName="stop-color" values="lightblue;blue;red;red;black;red;red;purple;lightblue" dur="10s" from="0%" to="100%" repeatCount="indefinite"/> </stop> </linearGradient> <g style="opacity: 0.38" stroke="url(#firstGradient)"> <polyline style="fill: none;stroke-miterlimit: 10;stroke-width: 1px"/> </g> </svg> </div> </div> <div style="clear:both"></div> <div style="width: 10%: position: relative;"> <div class="title-svg" style="width: 100%;position: absolute;top: 10px;"> <svg class="svgWidget" data-name="svgWidget" xmlns="http://www.w3.org/2000/svg"> <linearGradient id="firstGradient" x="100%" y="100%"> <stop offset="0" stop-color="yellow"> <animate attributeName="stop-color" values="green;teal;purple;orange;red" dur="10s" from="0" to="100%" repeatCount="indefinite"/> </stop> <stop offset=100 stop-color="purple"> <animate attributeName="stop-color" values="lightblue;blue;red;red;black;red;red;purple;lightblue" dur="10s" from="0%" to="100%" repeatCount="indefinite"/> </stop> </linearGradient> <g style="opacity: 0.38" stroke="url(#firstGradient)"> <polyline style="fill: none;stroke-miterlimit: 10;stroke-width: 1px"/> </g> </svg> </div> </div> 

As you can see, it did not make my elements responsive.

---

SOLVED THE PROBLEM WITH THIS CODE:

function widgetTitle() {
    $(".title-svg").each(function(i, item) {
        item = $(item);
        //$(".svgWidget", item).css("width", item.width()+17);

        var a = item.outerWidth() - 2;
        var constantPoint1 = "0.83 0.56 15.83 22.56 ";
        var constantPoint2 = " 22.56 ";
        var constantPoint3 = " 50.56";

        var changePoint = a;

        var points = constantPoint1 + changePoint + constantPoint2 + changePoint + constantPoint3;
        var viewBox = "0 0 " + a + " 50.56";

        $(".svgWidget polyline", item).attr("points", points);
        $(".svgWidget", item).attr("viewbox", viewBox);
    });
}

$(window).on('resize', function() {
    widgetTitle();
});

widgetTitle();

Answer 1

1. Do not set an absolute width for the svg elements. If you need something different than 100%, use relative units like % or vw .

2. With jQuery, you have a problem: it is a HTML framework that does not support XML syntax for SVG prior to version 3 . While you try to set the viewBox attribute, jQuery converts that to viewbox in lowercase, which does not work since SVG is case-sensitive. Either use the pure js syntax instead, or use jQuery in version 3 or later.

3. There is syntax error in the outer div for the second svg

 function widgetTitle() { $(".title-svg").each(function(i, item) { item = $(item); // only need this for values other than 100% // $(".svgWidget", item).css("width", "100%"); var a = item.outerWidth() + 17; var constantPoint1 = "0.83 0.56 15.83 22.56 "; var constantPoint2 = " 22.56 "; var constantPoint3 = " 50.56"; var changePoint = a-2; var points = constantPoint1 + changePoint + constantPoint2 + changePoint + constantPoint3; var viewBox = "0 0 " + a + " 50.56"; $(".svgWidget polyline", item).attr("points", points); $(".svgWidget", item).get(0).setAttribute("viewBox", viewBox); }); } widgetTitle(); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div style="width: 80%; position: relative;margin-bottom: 50px"> <div class="title-svg" style="width: 100%;position: absolute;top: 10px;"> <svg class="svgWidget" data-name="svgWidget" xmlns="http://www.w3.org/2000/svg"> <linearGradient id="firstGradient" x="100%" y="100%"> <stop offset="0" stop-color="yellow"> <animate attributeName="stop-color" values="green;teal;purple;orange;red" dur="10s" from="0" to="100%" repeatCount="indefinite"/> </stop> <stop offset=100 stop-color="purple"> <animate attributeName="stop-color" values="lightblue;blue;red;red;black;red;red;purple;lightblue" dur="10s" from="0%" to="100%" repeatCount="indefinite"/> </stop> </linearGradient> <g style="opacity: 0.38" stroke="url(#firstGradient)"> <polyline style="fill: none;stroke-miterlimit: 10;stroke-width: 1px"/> </g> </svg> </div> </div> <div style="clear:both"></div> <div style="width: 10%; position: relative;"> <div class="title-svg" style="width: 100%;position: absolute;top: 10px;"> <svg class="svgWidget" data-name="svgWidget" xmlns="http://www.w3.org/2000/svg"> <linearGradient id="firstGradient" x="100%" y="100%"> <stop offset="0" stop-color="yellow"> <animate attributeName="stop-color" values="green;teal;purple;orange;red" dur="10s" from="0" to="100%" repeatCount="indefinite"/> </stop> <stop offset=100 stop-color="purple"> <animate attributeName="stop-color" values="lightblue;blue;red;red;black;red;red;purple;lightblue" dur="10s" from="0%" to="100%" repeatCount="indefinite"/> </stop> </linearGradient> <g style="opacity: 0.38" stroke="url(#firstGradient)"> <polyline style="fill: none;stroke-miterlimit: 10;stroke-width: 1px"/> </g> </svg> </div> </div> 

What I can't tell you is whether your vertical positioning is what you intended. The .title-svg divs are absolutely positioned, so the outer divs have a height of zero. As a consequence the <div style="clear:both"></div> has no effect.