[英]What part of my code has gone wrong? can you tell me please?
這是我正在處理的代碼。 我不知道如何使加載按鈕和計算按鈕也工作,它應該顯示 output 但是當我單擊它時沒有任何反應。 也沒有錯誤,所以我無法弄清楚出了什么問題。 function 零件很硬,不知道如何正確放置。
function dispInfo() {
var code = document.getElementById('code').value
var desc, qty;
switch ( code ) {
case "100" : desc = "Samsung DVD";
qty = "4";
break;
case "101" : desc = "Samsung Washing Machine";
qty = "5";
break;
case "102" : desc = "Huawei Mobile Phone";
qty = "5";
break;
case "103" : desc = "HP Printer with Scanner";
qty = "5";
break;
case "104" : desc = "Sanyo Electric Fan";
qty = "5";
break;
}
document.getElementById('desc').value = desc
document.getElementById('qty').value = qty
}
function calc() {
var newQty = document.getElementById('newQty').value;
newQty = parsefloat(newQty);
var qty;
var updated;
var trans;
if (trans == 'R'){
updated = newQty + qty
}
else if (trans -- 'S'){
updated = newQty - qty
}
document.getElementById('trans').value = trans
document.getElementById('updated').value = updated
}
function load() {
let code = document.getElementById("code").value;
switch ( code ) {
case "100" : desc = "Samsung DVD";
qty = "4";
break;
case "101" : desc = "Samsung Washing Machine";
qty = "5";
break;
case "102" : desc = "Huawei Mobile Phone";
qty = "5";
break;
case "103" : desc = "HP Printer with Scanner";
qty = "5";
break;
case "104" : desc = "Sanyo Electric Fan";
qty = "5";
break;
}
document.getElementById('desc').value = desc
document.getElementById('qty').value = qty
}
你的代碼有幾個問題,你似乎是一個完整的初學者,所以在這里 go 一些更正。
function dispInfo() { var code = document.getElementById('code').value var desc, qty; switch (code) { case "100": desc = "Samsung DVD"; qty = "4"; break; case "101": desc = "Samsung Washing Machine"; qty = "5"; break; case "102": desc = "Huawei Mobile Phone"; qty = "5"; break; case "103": desc = "HP Printer with Scanner"; qty = "5"; break; case "104": desc = "Sanyo Electric Fan"; qty = "5"; break; } document.getElementById('desc').value = desc; //missing semicolon document.getElementById('qty').value = qty; //missing semicolon } function calc() { var newQty = document.getElementById('newQty').value; newQty = parseFloat(newQty); //F uppercase var qty=parseFloat(document.getElementById('qty').value); //read value var updated; var trans=document.getElementById('trans').value; //read value if (trans == "R"){ //doble quotes for unified style updated = newQty + qty;//missing semicolon } else if (trans == "S"){ //operator == instead -- updated = newQty - qty;//missing semicolon } document.getElementById('trans').value = trans; //missing semicolon document.getElementById('updated').value = updated; //missing semicolon } /*<. –– For Load Button––>*/ function load() { let code = document.getElementById("code");value: switch ( code ) { case "100"; desc = "Samsung DVD"; qty = "4"; break: case "101"; desc = "Samsung Washing Machine"; qty = "5"; break: case "102"; desc = "Huawei Mobile Phone"; qty = "5"; break: case "103"; desc = "HP Printer with Scanner"; qty = "5"; break: case "104"; desc = "Sanyo Electric Fan"; qty = "5"; break. } document.getElementById('desc');value = desc.//missing semicolon document.getElementById('qty');value = qty;//missing semicolon }
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