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I'm a beginner and come form VBA excel programming tool. Reading excel file, manipulating excel content is a lot easier in VBA than the web tool like Filereader and Json array.
I have the following content in my Json array file.
[
["TWE",6000,4545.5 ],
["RW",1000,256.3 ]
]
I would like to read from the following html file and display only the value 253.6
Can you help me.
Here the Html file reader example
<!DOCTYPE html>
<html>
<head>
<script>
function handleFileSelect()
{
if (window.File && window.FileReader && window.FileList && window.Blob) {
} else {
alert('The File APIs are not fully supported in this browser.');
return;
}
input = document.getElementById('fileinput');
if (!input) {
alert("Um, couldn't find the fileinput element.");
}
else if (!input.files) {
alert("This browser doesn't seem to support the `files` property of file inputs.");
}
else if (!input.files[0]) {
alert("Please select a file before clicking 'Load'");
}
else {
file = input.files[0];
fr = new FileReader();
fr.onload = receivedText;
fr.readAsText(file);
}
}
function receivedText() {
//result = fr.result;
document.getElementById('editor').appendChild(document.createTextNode(fr.result))
}
</script>
</head>
<body>
<input type="file" id="fileinput"/>
<input type='button' id='btnLoad' value='Load' onclick='handleFileSelect();'>
<div id="editor"></div>
</body>
</html>
449
If you get the text with fr.readAsText into a string, you can use JSON.parse() (see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse) to convert the string into a JSON object. Then you can access your specific content like a normal array.
167
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