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[英]Remove Last Character From String If It's a “!” Using For-Loop - JavaScript
[英]Javascript: how to remove last comma in for-loop
如何从该函数中删除最后一个逗号。
for(var i = 0; i <= 100; i++) {
if(i % 2 === 0) {
div.innerHTML += l + ",";
}
else {
div.innerHTML += " ";
}
}
首先,使用数组而不是字符串作为求和字符串,它更快。 第二:
var arr = [];
for (var i = 0 ;i <= 100; i+=2) arr.push(l);
dividedThree.innerHTML = arr.join(', ');
尝试使用and (&&)
条件为100,并仅显示i
值为100。
function loop() { var dividedThree = document.getElementById('MY_ID'); for (var i = 0; i <= 100; i++) { if (i % 2 === 0 && i !== 100) { dividedThree.innerHTML += i + ", "; } else if (i === 100) { dividedThree.innerHTML += i; } else { dividedThree.innerHTML += " "; } } } loop();
<p id="MY_ID"> <p>
function loop {
for (var i = 0; i <= 100; i++) {
if (i % 2 === 0) {
dividedThree.innerHTML += l;
if (i < 100)
{
dividedThree.innerHTML += ",";
}
} else {
dividedThree.innerHTML += " ";
}
}
}
这个版本适合您吗?
function loop() {
var data = '';
for (var i = 0; i <= 49; i++) {
data += l + ',' + ' ';
}
data += l;
dividedThree.innerHTML = data;
}
你想做什么? “ l”来自哪里?
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