29 lines
858 B
JavaScript
29 lines
858 B
JavaScript
/**
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* @module ol/uri
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*/
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/**
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* Appends query parameters to a URI.
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*
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* @param {string} uri The original URI, which may already have query data.
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* @param {!Object} params An object where keys are URI-encoded parameter keys,
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* and the values are arbitrary types or arrays.
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* @return {string} The new URI.
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*/
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export function appendParams(uri, params) {
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const keyParams = [];
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// Skip any null or undefined parameter values
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Object.keys(params).forEach(function(k) {
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if (params[k] !== null && params[k] !== undefined) {
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keyParams.push(k + '=' + encodeURIComponent(params[k]));
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}
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});
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const qs = keyParams.join('&');
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// remove any trailing ? or &
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uri = uri.replace(/[?&]$/, '');
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// append ? or & depending on whether uri has existing parameters
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uri = uri.indexOf('?') === -1 ? uri + '?' : uri + '&';
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return uri + qs;
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}
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