javascript - Html5 filereader - read local Json Array file and display only a specific section -
i'm beginner , come form vba excel programming tool. reading excel file, manipulating excel content lot easier in vba web tool filereader , json array.
i have following content in json array file.
[ ["twe",6000,4545.5 ], ["rw",1000,256.3 ] ] i read following html file , display value 253.6
can me.
here 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 not supported in browser.'); return; } input = document.getelementbyid('fileinput'); if (!input) { alert("um, couldn't find fileinput element."); } else if (!input.files) { alert("this browser doesn't seem support `files` property of file inputs."); } else if (!input.files[0]) { alert("please select 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>
if text fr.readastext string, can use json.parse() (see: https://developer.mozilla.org/en-us/docs/web/javascript/reference/global_objects/json/parse) convert string json object. can access specific content normal array.
Comments
Post a Comment