FormData

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如何取得FormData的Key,Value

HTML

<form>
 <input type="text" name="banana" id="fddsf" value="swag">
</form>

JS

var form = document.forms[0];
var formData = new FormData(form);


for (var [key, value] of formData.entries()) {
 //Key:banana Value:swag
 console.log(key, value);
} 
//透過for..of存取formData.entries等同於下列語法
//for(var [key,value] of formData){
//  ....
//}

An object implementing FormData can directly be used in a for...of structure, instead of entries(): for (var p of myFormData) is equivalent to for (var p of myFormData.entries()).

更多訊息請參考此連結