Jspreadsheet/ce JExcel: more data fields than the given fields (columns) will lead to blank columns. Solution

JExcel The data field is bigger than the given field (columns) Too many columns will cause the problem of blank columns

After a long debugging , Summarize the results of the solution

stay jexcel.js Of documents 370 That's ok , It can be solved by annotating it as follows

as a result of Object.keys(obj.options.data[0]).length Will get the data key The number of , And in for Add in loop obj.options.columns The action of , This will result in blank columns ( Field ) Appearance

/* //  This code will read the data key,  And return the number ,  Then it loops and adds to obj.options.columns
if (obj.options.data && typeof(obj.options.data[0]) !== 'undefined') {
    // Data keys
    var keys = Object.keys(obj.options.data[0]);
    if (keys.length > size) {
        size = keys.length;
    }
}*/

//  More columns will be added below ,  So comment out the above code to keep the data consistent with the field 
// Preparations
for (var i = 0; i < size; i++) {}