英文:
how to pass clear html elements(as text format) to backend(express js)
问题
我需要使用Angular HTTP将<svg></svg>
元素作为纯文本传递给后端。例如,我有一个带有<svg>
元素的Angular-HTML页面:
<div>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 540 320">
<defs>
<path id="Triangle" d="M120 20 L 220 193.205 L 20 193.205 Z" stroke="red" fill="url(#radial)"/>
<path id="Maths" d="M250,50C380,50 350,150 480,150" stroke="green" fill="none"/>
<path id="Chemistry" transform="translate(-200,0) scale(1.5)" d="M250,50C380,50 350,150 480,150" stroke="blue" fill="none"/>
<path id="Path" d="M20,240 C40,280 60,280 200,230 A100 100 0 0 1 300,260 L 330,280 Q 400,320 500,200" stroke="orange" fill="none"/>
<linearGradient id="linear" x1="0" x2="1" gradientUnits="objectBoundingBox">
<stop stop-color="green" offset="0"/>
<stop stop-color="red" offset="1"/>
</linearGradient>
<radialGradient id="radial" cx="0.5" cy="0.6667" r="0.6" gradientUnits="objectBoundingBox">
<stop stop-color="orange" offset="0.2"/>
<stop stop-color="yellow" offset="1"/>
</radialGradient>
<pattern id="pattern" width="4" height="4" patternUnits="userSpaceOnUse">
<rect width="4" height="4"/>
<rect width="2" height="2" fill="red"/>
<rect x="2" y="2" width="2" height="2" fill="red"/>
</pattern>
</defs>
<rect x="2%" y="2%" width="96%" height="96%" fill="url(#linear)" fill-opacity="0.3" stroke="orange" stroke-width="2" stroke-dasharray="5 2 2 2 5 5"/>
<use xlink:href="#Triangle"/>
<use xlink:href="#Maths"/>
<use xlink:href="#Chemistry"/>
<use xlink:href="#Path"/>
<text textLength="600px" lengthAdjust="spacingAndGlyphs" fill="url(#pattern)">
<textPath xlink:href="#Triangle" font-size="20" font-family="serif" font-weight="bold" textLength="600px" lengthAdjust="spacingAndGlyphs">Text adjusted around a triangle</textPath>
</text>
<text font-family="sans-serif">
<textPath xlink:href="#Maths" font-size="30" fill="blue" text-anchor="middle" startOffset="50%">Maths x<tspan font-size="20" baseline-shift="super">2</tspan> + y<tspan font-size="20" baseline-shift="super">2</tspan> = z<tspan font-size="20" baseline-shift="super">2</tspan>!</textPath>
<textPath xlink:href="#Chemistry" font-size="30" fill="green" text-anchor="middle" startOffset="50%">Chemistry 2H<tspan font-size="20" baseline-shift="sub">2</tspan> + O<tspan font-size="20" baseline-shift="sub">2</tspan> -> 2H<tspan font-size="20" baseline-shift="sub">2</tspan>O</textPath>
<textPath xlink:href="#Path" font-size="30" fill="purple" dominant-baseline="middle" text-anchor="middle" startOffset="50%">Text centered on a complex path</textPath>
</text>
</svg>
</div>
是否可能使用Angular HTTP将SVG传递到后端?
英文:
I need to pass an <svg></svg>
element to backend as clear text using angular HTTP.
for example, I have an angular-html page with a <svg>
element,
<div>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 540 320">
<defs>
<path id="Triangle" d="M120 20 L 220 193.205 L 20 193.205 Z" stroke="red" fill="url(#radial)"/>
<path id="Maths" d="M250,50C380,50 350,150 480,150" stroke="green" fill="none"/>
<path id="Chemistry" transform="translate(-200,0) scale(1.5)" d="M250,50C380,50 350,150 480,150" stroke="blue" fill="none"/>
<path id="Path" d="M20,240 C40,280 60,280 200,230 A100 100 0 0 1 300,260 L 330,280 Q 400,320 500,200" stroke="orange" fill="none"/>
<linearGradient id="linear" x1="0" x2="1" gradientUnits="objectBoundingBox">
<stop stop-color="green" offset="0"/>
<stop stop-color="red" offset="1"/>
</linearGradient>
<radialGradient id="radial" cx="0.5" cy="0.6667" r="0.6" gradientUnits="objectBoundingBox">
<stop stop-color="orange" offset="0.2"/>
<stop stop-color="yellow" offset="1"/>
</radialGradient>
<pattern id="pattern" width="4" height="4" patternUnits="userSpaceOnUse">
<rect width="4" height="4"/>
<rect width="2" height="2" fill="red"/>
<rect x="2" y="2" width="2" height="2" fill="red"/>
</pattern>
</defs>
<rect x="2%" y="2%" width="96%" height="96%" fill="url(#linear)" fill-opacity="0.3" stroke="orange" stroke-width="2" stroke-dasharray="5 2 2 2 5 5"/>
<use xlink:href="#Triangle"/>
<use xlink:href="#Maths"/>
<use xlink:href="#Chemistry"/>
<use xlink:href="#Path"/>
<text textLength="600px" lengthAdjust="spacingAndGlyphs" fill="url(#pattern)">
<textPath xlink:href="#Triangle" font-size="20" font-family="serif" font-weight="bold" textLength="600px" lengthAdjust="spacingAndGlyphs">Text adjusted around a triangle</textPath>
</text>
<text font-family="sans-serif">
<textPath xlink:href="#Maths" font-size="30" fill="blue" text-anchor="middle" startOffset="50%">Maths x<tspan font-size="20" baseline-shift="super">2</tspan> + y<tspan font-size="20" baseline-shift="super">2</tspan> = z<tspan font-size="20" baseline-shift="super">2</tspan>!</textPath>
<textPath xlink:href="#Chemistry" font-size="30" fill="green" text-anchor="middle" startOffset="50%">Chemistry 2H<tspan font-size="20" baseline-shift="sub">2</tspan> + O<tspan font-size="20" baseline-shift="sub">2</tspan> -> 2H<tspan font-size="20" baseline-shift="sub">2</tspan>O</textPath>
<textPath xlink:href="#Path" font-size="30" fill="purple" dominant-baseline="middle" text-anchor="middle" startOffset="50%">Text centered on a complex path</textPath>
</text>
</svg>
</div>
Is it possible to pass the svg to backend with angular HTTP.
答案1
得分: 1
你可以使用 ViewChild
来选择 svg
元素,然后通过 outerHTML
访问 HTML。
在 HTML 中设置对 svg
的引用,
<svg #svgElement ...
从引用获取数据,
@ViewChild('svgElement', {static: true}) svgElement: ElementRef;
onClick() {
console.log(this.svgElement.nativeElement.outerHTML)
}
英文:
You can use ViewChild
for selecting svg
element and then by outerHTML
access the HTML.
Set reference to svg
in HTML,
<svg #svgElement ...
Get data from reference,
@ViewChild('svgElement', {static: true}) svgElement: ElementRef;
onClick() {
console.log(this.svgElement.nativeElement.outerHTML)
}
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