我需要使用替换功能将字符串的某些部分变为粗体 [英] I need to make some part of my string bold using replace function
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问题描述
我需要使用replace函数将字符串的某些部分加粗."b"和强"标签在字符串中不能作为<"使用.标签的一部分会在输出中显示毫秒，这是非常不专业的.我无法应用此功能
I need to make some part of my string bold using the replace function. "b" and "strong" tags do not work within the string as "<" part of tag displays in the output for milliseconds which is quite unprofessional. I am unable to apply this function
boldString(str, substr) {
var strRegExp = new RegExp(substr, 'g');
return str.replace(strRegExp, '<b>'+substr+'</b>');
}
我认为这可能有效，或者请给我一些替代解决方案.谢谢
I think it might work or please give me some alternate solution. Thanks
function startTyping(){
var bt = document.getElementById("typBt");
bt.style.display = "none";
for (let i = 0; i < 10; i++) {
task(i);
}
}
function task(i) {
setTimeout(function() {
// Add tasks to do
var typeString = ['\u2022 A quick brown fox \r jumps over the lazy dog. \u2714\uFE0F\n\n\u2022 A quick brown fox \r jumps over the lazy dog. \u2714\uFE0F\n\n\u2022 A quick broum fox \r jumnps over the lazy dog. \u2714\uFE0F\n\n\u2022 A quick brown fox \r jumps over the lazy dog. \u2714\uFE0F\n\n\u2022 A quick brown fox \r jumps over the lazy dog. \u2714\uFE0F'];
var i = 0;
var count = 0;
var selectedText = '';
var text = '';
var typing = document.getElementById('typing');
(function type() {
if (count == typeString.length) {
count = 0;
};
selectedText = typeString[count];
text = selectedText.slice(0, ++i);
typing.innerHTML = text.fontsize(3);
typing.style.fontFamily = "helveticanew";
typing.style.color = "black";
typing.style.fontWeight = "normal";
typing.style.lineHeight = "1"; //Difference between different lines
typing.style.textAlign = "left";
typing.style.margin = "25px";
if (text.length === selectedText.length) {
count++;
i = 0;
}
/* SOLUTION : wait two seconds when new line */
if (typeString[0][i - 1] == '\n') {
setTimeout(type, 1000); //Time delay between two bullets
} else if (count === 1) {
setTimeout(type, 5000); //Time delay after typing is finished
} else {
setTimeout(type, 40); //Typing speed
}
}());
}, 1000);//Start time
}
// uni code for bullet "\u2022"
// uni code for tick mark "\u2714\uFE0F"
// line break "\r"
// line break for new bullet "/n"#typBt {
background-color: green;
border: 20px solid;
color: black;
padding: 50px;
text-align: center;
text-decoration: underline overline;
display: inline-block;
font-size: 16px;
margin: 50px 200px;
cursor: pointer;
border-radius: 50%;
outline:none
} <pre id="typing"></pre>
<button id="typBt" onclick="startTyping()">Show Typing</button>推荐答案
假设您知道要用粗体显示的文本...这里有一个JS字符串函数bold().
Supposing that you know the text to be put in bold... There is a JS string function bold().
这可以帮助您...
<!DOCTYPE html>
<html>
<body>
<p>Click the button to display a string in bold.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var str = "Hello World!";
var result = "The " + str.bold() + " is in bold";
document.getElementById("demo").innerHTML = result;
}
</script>
</body>
</html>
检查: https://www.w3schools.com/jsref/tryit.asp?filename = tryjsref_str_bold
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