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[英]How Can I Call Multiple JavaScript Functions In Onclick Event for Submit Button?
[英]How can i submit a fom when their is multiple functions are created , which function to call on evnets like onclick and onsubmit?
<html>
<body>
<form onsubmit="return myFunction()">
<input type="text" id="txt">
<input type="text" id="txt1">
<input type="button" value="click" id="btn">
</form>
</body>
<script>
var a = document.getElementById("txt");
var b = document.getElementById("txt1");
var save = document.getElementById("btn");
//save.addEventListener("click" , myFun);
save.onclick = function(){myFunction()};
//save.addEventListener("click" , myFunction);
function myFunction(){
if((a.value=="") || (b.value=="")){
alert("fill something");
return false;
}else{
alert("all ok");
location.href="sec.html";
return true;
}
//a.addEventListener("keyup" , myFun);
//b.addEventListener("keyup" , myFun);
}
a.addEventListener("keyup" , myKeyFun);
b.addEventListener("keyup" , myKeyFun);
function myKeyFun()
{
if(a.value!==b.value){
alert("mismatched");
return false;
}else{
return true;
}
}
</script>
</html>
我已经为不同的 - 不同的验证创建了许多函数,所以现在我想提交表单并在所有cinditons都为真时重定向到另一个页面。 但是即使条件不正确,这里的表单也会被提交,我写了这段代码只是为了理解。 实际代码相当大,所以我写了这个来理解当有 multilpe 函数时我将如何调用 main 函数来提交表单
不要通过制作不同的功能来搞砸。 请按照以下条件进行操作。
var a = document.getElementById("txt"); var b = document.getElementById("txt1"); var save = document.getElementById("btn"); function myFunction() { if(a.value == ""){ alert("Please fill Text 1"); }else if(b.value == ""){ alert("Please fill Text 2"); }else if (a.value != b.value){ alert("Text 1 and Text 2 must be same"); } else{ alert("Successfully submitted"); //redirect to another page code; } } function textTwoFun(){ if(a.value != b.value){ alert('Value missmatched! Text 1 and Text 2 must be same'); } }
<form> <input type="text" id="txt" placeholder="Text 1"> <input type="text" id="txt1" onkeyup="textTwoFun()" placeholder="Text 2"> <input type="button" onclick="myFunction()" value="click" id="btn"> </form>
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