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Use asynchronous programming to read data files
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parent
3762339745
commit
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index.html
10
index.html
@ -4,12 +4,14 @@
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<script src="scripts/data.js" type="text/javascript"></script>
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<script src="scripts/data.js" type="text/javascript"></script>
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<script>
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<script>
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function update_file(filename) {
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function update_file(filename) {
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lnk_doi=document.getElementById('lnk_doi');
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file=filename+'.json'
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file=filename+'.json'
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data=getDataFromFile(file)
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lnk_doi.setAttribute('href',getDoiUrl(data));
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lnk_file=document.getElementById('lnk_file');
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lnk_file.setAttribute('href',getFullDataPath(file));
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lnk_file.setAttribute('href',getFullDataPath(file));
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lnk_file=document.getElementById('lnk_file');
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getDataFromFile(file,onApplyData)
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}
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function onApplyData(data) {
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lnk_doi=document.getElementById('lnk_doi');
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lnk_doi.setAttribute('href',getDoiUrl(data));
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}
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}
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</script>
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</script>
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<script>
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<script>
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@ -1,13 +1,16 @@
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function getDataFromFile(file) {
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function getDataFromFile(file,fn) {
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var result = null;
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var result = null;
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var xmlhttp = new XMLHttpRequest();
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var xmlhttp = new XMLHttpRequest();
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xmlhttp
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xmlhttp
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xmlhttp.open("GET",getFullDataPath(file), false);
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xmlhttp.open("GET",getFullDataPath(file), true);
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xmlhttp.send();
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xmlhttp.onreadystatechange = function() {
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if (xmlhttp.status==200) {
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if (this.readyState == 4 && this.status == 200) {//when a good response is given do this
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text = xmlhttp.responseText;
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var data = JSON.parse(this.responseText); // convert the response to a json object
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fn(data)
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}
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}
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return JSON.parse(text);
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}
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xmlhttp.send();
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}
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}
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function getDoiUrl(data) {
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function getDoiUrl(data) {
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