页面历史记录

<div>
	<object id="dynamic-svg" data="/testpage.svg" type="image/svg+xml" style="width:100% !important;"></object>     
</div>
<script>
    var svgHolder = document.querySelector("object#dynamic-svg");
    svgHolder.onload = function() {
        var svgDocument = svgHolder.contentDocument;
        var style = svgDocument.createElementNS("http://www.w3.org/2000/svg", "style");
    
        style.textContent = '@import url("/hover.css");';
    
        var svgElem = svgDocument.querySelector('svg');
        svgElem.insertBefore(style, svgElem.firstChild);  

		var anchors =  svgElem .querySelectorAll('a');
		for(var i=0; i < anchors.length; i++) {
			anchors[i].setAttribute('target', '_parent');
		}
    };
</script>