How to implement JavaScript to detect whether a string contains html tags_javascript skills

Function code

Copy code The code is as follows:

/**
* Detection of whether a string contains html tag
* @param htmlStr
​*/
function checkHtml(htmlStr) {
var reg = /<[^>] >/g;
Return reg.test(htmlStr);
}

demo
script：

Copy code The code is as follows:

/**
* Detection of whether a string contains html tag
* @param htmlStr
​*/
function checkHtml(htmlStr) {
var reg = /<[^>] >/g;
Return reg.test(htmlStr);
}
window.onload=function(){
var html=document.querySelector('#box').innerHTML;
alert(checkHtml(html))
}

html

Copy code The code is as follows:

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