Suppose I have an array with the following elements:
thisarray = new Array("this", "that", "theotherthing");
Is it possible to create a conditional statement like this?
if(thisarray[0] == thisvar && thisarray[1] == thisvar && thisarray[2] == thisvar) {
//do something
}
The challenge here is that the length of thisarray may vary. Finding a solution for this problem has left me perplexed. Any assistance on how to achieve this would be greatly appreciated.
For those with Javascript 1.6 compatibility, accomplishing this task in a single line is possible:
if (thisarray.every(function(e) { return (e == thisvar); })) {
// Carry out necessary actions
}
let isValid = true;
for(let index=0; index<arr.length && isValid; ++index){
if (arr[index] != target)
isValid = false;
}
//check if valid
if(isValid)
{
//Implement your logic here
}
Utilizing a for loop allows you to cycle through the elements in an array, assessing their values each time.
let checkValue = true;
for(let index=0; index < myArray.length; index+=1){
if(myArray[index] != targetValue){
checkValue = false;
}
}
checkValue will remain true if every element in the array matches the target value, but false if there is a discrepancy.
A useful function can be created as follows:
function checkAllElements(arr, fn) {
for (var index = 0; index < arr.length; ++index)
if (!fn(arr[index], index)) return false;
return true;
}
To use this function, you can do the following:
if (checkAllElements(thisArray, function(elem) { return elem === targetVar; })) {
// all elements are equal to the target variable
}
UPDATE: Upon reexamining your request, I see that you actually want all elements to match rather than just any one. However, I'll keep my original response here in case it serves as a helpful reference for situations where the condition needs only one match.
To ensure that all elements match, you can iterate through them using a for loop like so:
for (var i = 0; i < thisarray.length; i++) {
if (thisarray[i] == thisvar) {
// Perform desired action
break; // Prevent repetition in case of multiple matches
}
}
To streamline the comparison process, you can utilize two arrays - one for actual values and another for expected values. By comparing elements in these arrays, you can easily determine if they are equal. Here is an example implementation:
function checkArrays(actualValues, expectedValues) {
if (actualValues.length !== expectedValues.length) { return false; }
var length = actualValues.length;
for (index = 0; index < length; index++) {
if (actualValues[index] !== expectedValues[index]) { return false; }
}
return true;
}
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