<!DOCTYPE html> <html> <head> <title>Mouse Position</title> <link rel="stylesheet" href="https://openlayers.org/en/v4.0.1/css/ol.css" type="text/css"> <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x --> <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script> <script src="https://openlayers.org/en/v4.0.1/build/ol.js"></script> </head> <body> <div id="map" class="map"></div> <div id="mouse-position"></div> <form> <label>Projection </label> <select id="projection"> <option value="EPSG:4326">EPSG:4326</option> <option value="EPSG:3857">EPSG:3857</option> </select> <label>Precision </label> <input id="precision" type="number" min="0" max="12" value="4"/> </form> <script> var mousePositionControl = new ol.control.MousePosition({ coordinateFormat: ol.coordinate.createStringXY(4), projection: 'EPSG:4326', // comment the following two lines to have the mouse position // be placed within the map. className: 'custom-mouse-position', target: document.getElementById('mouse-position'), undefinedHTML: ' ' }); var map = new ol.Map({ controls: ol.control.defaults({ attributionOptions: /** @type {olx.control.AttributionOptions} */ ({ collapsible: false }) }).extend([mousePositionControl]), layers: [ new ol.layer.Tile({ source: new ol.source.OSM() }) ], target: 'map', view: new ol.View({ center: [0, 0], zoom: 2 }) }); var projectionSelect = document.getElementById('projection'); projectionSelect.addEventListener('change', function(event) { mousePositionControl.setProjection(ol.proj.get(event.target.value)); }); var precisionInput = document.getElementById('precision'); precisionInput.addEventListener('change', function(event) { var format = ol.coordinate.createStringXY(event.target.valueAsNumber); mousePositionControl.setCoordinateFormat(format); }); </script> </body> </html>
OpenLayers示例代码:鼠标位置
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