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utils.go
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utils.go
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// Copyright 2019 Vanessa Sochat. All rights reserved.
// Use of this source code is governed by the Polyform Strict license
// that can be found in the LICENSE file and available at
// https://polyformproject.org/licenses/noncommercial/1.0.0
package main
import (
"fmt"
"strings"
"syscall/js"
)
// convert an array of floats to a string to send back to browser
func floatToString(floats []float64) string {
var values []string
var stringValues string
for i := range floats {
text := fmt.Sprintf("%f", floats[i])
values = append(values, text)
}
stringValues = strings.Join(values, ",")
return stringValues
}
// floatArrayToString converts an array of floats to a single string
// we expect there only to be one value per array entry
func floatArrayToString(floats [][]float64) string {
var values []string
var stringValues string
for i := range floats {
text := fmt.Sprintf("%f", floats[i][0])
values = append(values, text)
}
stringValues = strings.Join(values, ",")
return stringValues
}
// returnResult back to the browser, in the innerHTML of the result element
func returnResult(output string, divid string) {
js.Global().Get("document").
Call("getElementById", divid).
Set("innerHTML", output)
}
func sendMessage (message string, div_id string) {
messageFunc := js.Global().Get("showMessage")
messageFunc.Invoke(message, div_id)
}
func hideMessage (div_id string) {
messageFunc := js.Global().Get("hideMessage")
messageFunc.Invoke(div_id)
}